Core/Misc: Refactor scripts to fix static analysis warnings

First batch of fixes targeting 100 issues reported by Coverity

45 files changed, 1148 insertions, 448 deletions

diff --git a/src/server/game/Entities/Object/Object.cpp b/src/server/game/Entities/Object/Object.cpp
index 77f318066a2..45450a0c129 100644
--- a/src/server/game/Entities/Object/Object.cpp
+++ b/src/server/game/Entities/Object/Object.cpp
@@ -74,6 +74,7 @@ Object::Object() : m_PackGUID(sizeof(uint64)+1)
 {
     m_objectTypeId      = TYPEID_OBJECT;
     m_objectType        = TYPEMASK_OBJECT;
+    m_updateFlag        = UPDATEFLAG_NONE;
 
     m_uint32Values      = NULL;
     m_valuesCount       = 0;
diff --git a/src/server/game/Spells/SpellInfo.cpp b/src/server/game/Spells/SpellInfo.cpp
index 99c3d234ef8..5ef6acbcce1 100644
--- a/src/server/game/Spells/SpellInfo.cpp
+++ b/src/server/game/Spells/SpellInfo.cpp
@@ -853,6 +853,7 @@ SpellInfo::SpellInfo(SpellEntry const* spellEntry)
         Effects[i] = SpellEffectInfo(spellEntry, this, i);
 
     ChainEntry = NULL;
+    ExplicitTargetMask = 0;
 }
 
 SpellInfo::~SpellInfo()
diff --git a/src/server/scripts/EasternKingdoms/AlteracValley/alterac_valley.cpp b/src/server/scripts/EasternKingdoms/AlteracValley/alterac_valley.cpp
index 6f8b93bbdba..a9fc95fdb14 100644
--- a/src/server/scripts/EasternKingdoms/AlteracValley/alterac_valley.cpp
+++ b/src/server/scripts/EasternKingdoms/AlteracValley/alterac_valley.cpp
@@ -84,10 +84,20 @@ class npc_av_marshal_or_warmaster : public CreatureScript
 
         struct npc_av_marshal_or_warmasterAI : public ScriptedAI
         {
-            npc_av_marshal_or_warmasterAI(Creature* creature) : ScriptedAI(creature) { }
+            npc_av_marshal_or_warmasterAI(Creature* creature) : ScriptedAI(creature)
+            {
+                Initialize();
+            }
+
+            void Initialize()
+            {
+                _hasAura = false;
+            }
 
             void Reset() override
             {
+                Initialize();
+
                 events.Reset();
                 events.ScheduleEvent(EVENT_CHARGE_TARGET, urand(2 * IN_MILLISECONDS, 12 * IN_MILLISECONDS));
                 events.ScheduleEvent(EVENT_CLEAVE, urand(1 * IN_MILLISECONDS, 11 * IN_MILLISECONDS));
@@ -95,8 +105,6 @@ class npc_av_marshal_or_warmaster : public CreatureScript
                 events.ScheduleEvent(EVENT_WHIRLWIND, urand(5 * IN_MILLISECONDS, 20 * IN_MILLISECONDS));
                 events.ScheduleEvent(EVENT_ENRAGE, urand(5 * IN_MILLISECONDS, 20 * IN_MILLISECONDS));
                 events.ScheduleEvent(EVENT_CHECK_RESET, 5000);
-
-                _hasAura = false;
             }
 
             void JustRespawned() override
diff --git a/src/server/scripts/EasternKingdoms/AlteracValley/boss_balinda.cpp b/src/server/scripts/EasternKingdoms/AlteracValley/boss_balinda.cpp
index 52a05f6c0a3..8bc969e9020 100644
--- a/src/server/scripts/EasternKingdoms/AlteracValley/boss_balinda.cpp
+++ b/src/server/scripts/EasternKingdoms/AlteracValley/boss_balinda.cpp
@@ -110,7 +110,20 @@ public:
 
     struct boss_balindaAI : public ScriptedAI
     {
-        boss_balindaAI(Creature* creature) : ScriptedAI(creature), summons(me) { }
+        boss_balindaAI(Creature* creature) : ScriptedAI(creature), summons(me)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            arcaneExplosionTimer = urand(5 * IN_MILLISECONDS, 15 * IN_MILLISECONDS);
+            coneOfColdTimer = 8 * IN_MILLISECONDS;
+            fireBoltTimer = 1 * IN_MILLISECONDS;
+            frostboltTimer = 4 * IN_MILLISECONDS;
+            resetTimer = 5 * IN_MILLISECONDS;
+            waterElementalTimer = 0;
+        }
 
         uint32 arcaneExplosionTimer;
         uint32 coneOfColdTimer;
@@ -123,12 +136,7 @@ public:
 
         void Reset() override
         {
-            arcaneExplosionTimer      = urand(5 * IN_MILLISECONDS, 15 * IN_MILLISECONDS);
-            coneOfColdTimer           = 8 * IN_MILLISECONDS;
-            fireBoltTimer             = 1 * IN_MILLISECONDS;
-            frostboltTimer            = 4 * IN_MILLISECONDS;
-            resetTimer                = 5 * IN_MILLISECONDS;
-            waterElementalTimer       = 0;
+            Initialize();
 
             summons.DespawnAll();
         }
diff --git a/src/server/scripts/EasternKingdoms/AlteracValley/boss_drekthar.cpp b/src/server/scripts/EasternKingdoms/AlteracValley/boss_drekthar.cpp
index 4ecb57177a6..49c5a61b7d0 100644
--- a/src/server/scripts/EasternKingdoms/AlteracValley/boss_drekthar.cpp
+++ b/src/server/scripts/EasternKingdoms/AlteracValley/boss_drekthar.cpp
@@ -45,7 +45,20 @@ public:
 
     struct boss_drektharAI : public ScriptedAI
     {
-        boss_drektharAI(Creature* creature) : ScriptedAI(creature) { }
+        boss_drektharAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            WhirlwindTimer = urand(1 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
+            Whirlwind2Timer = urand(1 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
+            KnockdownTimer = 12 * IN_MILLISECONDS;
+            FrenzyTimer = 6 * IN_MILLISECONDS;
+            ResetTimer = 5 * IN_MILLISECONDS;
+            YellTimer = urand(20 * IN_MILLISECONDS, 30 * IN_MILLISECONDS); //20 to 30 seconds
+        }
 
         uint32 WhirlwindTimer;
         uint32 Whirlwind2Timer;
@@ -56,12 +69,7 @@ public:
 
         void Reset() override
         {
-            WhirlwindTimer    = urand(1 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
-            Whirlwind2Timer   = urand(1 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
-            KnockdownTimer    = 12 * IN_MILLISECONDS;
-            FrenzyTimer       = 6 * IN_MILLISECONDS;
-            ResetTimer        = 5 * IN_MILLISECONDS;
-            YellTimer         = urand(20 * IN_MILLISECONDS, 30 * IN_MILLISECONDS); //20 to 30 seconds
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/AlteracValley/boss_galvangar.cpp b/src/server/scripts/EasternKingdoms/AlteracValley/boss_galvangar.cpp
index 9e4fc5838ad..e422975bd1a 100644
--- a/src/server/scripts/EasternKingdoms/AlteracValley/boss_galvangar.cpp
+++ b/src/server/scripts/EasternKingdoms/AlteracValley/boss_galvangar.cpp
@@ -46,7 +46,20 @@ public:
 
     struct boss_galvangarAI : public ScriptedAI
     {
-        boss_galvangarAI(Creature* creature) : ScriptedAI(creature) { }
+        boss_galvangarAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            CleaveTimer = urand(1 * IN_MILLISECONDS, 9 * IN_MILLISECONDS);
+            FrighteningShoutTimer = urand(2 * IN_MILLISECONDS, 19 * IN_MILLISECONDS);
+            Whirlwind1Timer = urand(1 * IN_MILLISECONDS, 13 * IN_MILLISECONDS);
+            Whirlwind2Timer = urand(5 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
+            MortalStrikeTimer = urand(5 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
+            ResetTimer = 5 * IN_MILLISECONDS;
+        }
 
         uint32 CleaveTimer;
         uint32 FrighteningShoutTimer;
@@ -57,12 +70,7 @@ public:
 
         void Reset() override
         {
-            CleaveTimer                     = urand(1 * IN_MILLISECONDS, 9 * IN_MILLISECONDS);
-            FrighteningShoutTimer           = urand(2 * IN_MILLISECONDS, 19 * IN_MILLISECONDS);
-            Whirlwind1Timer                 = urand(1 * IN_MILLISECONDS, 13 * IN_MILLISECONDS);
-            Whirlwind2Timer                 = urand(5 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
-            MortalStrikeTimer               = urand(5 * IN_MILLISECONDS, 20 * IN_MILLISECONDS);
-            ResetTimer                      = 5 * IN_MILLISECONDS;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/AlteracValley/boss_vanndar.cpp b/src/server/scripts/EasternKingdoms/AlteracValley/boss_vanndar.cpp
index 076607a5672..1eabfb67f57 100644
--- a/src/server/scripts/EasternKingdoms/AlteracValley/boss_vanndar.cpp
+++ b/src/server/scripts/EasternKingdoms/AlteracValley/boss_vanndar.cpp
@@ -42,7 +42,19 @@ public:
 
     struct boss_vanndarAI : public ScriptedAI
     {
-        boss_vanndarAI(Creature* creature) : ScriptedAI(creature) { }
+        boss_vanndarAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            AvatarTimer = 3 * IN_MILLISECONDS;
+            ThunderclapTimer = 4 * IN_MILLISECONDS;
+            StormboltTimer = 6 * IN_MILLISECONDS;
+            ResetTimer = 5 * IN_MILLISECONDS;
+            YellTimer = urand(20 * IN_MILLISECONDS, 30 * IN_MILLISECONDS);
+        }
 
         uint32 AvatarTimer;
         uint32 ThunderclapTimer;
@@ -52,11 +64,7 @@ public:
 
         void Reset() override
         {
-            AvatarTimer        = 3 * IN_MILLISECONDS;
-            ThunderclapTimer   = 4 * IN_MILLISECONDS;
-            StormboltTimer     = 6 * IN_MILLISECONDS;
-            ResetTimer         = 5 * IN_MILLISECONDS;
-            YellTimer = urand(20 * IN_MILLISECONDS, 30 * IN_MILLISECONDS);
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/blackrock_depths.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/blackrock_depths.cpp
index 907aaed3a0d..51ca327738b 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/blackrock_depths.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/blackrock_depths.cpp
@@ -124,10 +124,27 @@ public:
     {
         npc_grimstoneAI(Creature* creature) : npc_escortAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
             MobSpawnId = rand32() % 6;
         }
 
+        void Initialize()
+        {
+            EventPhase = 0;
+            Event_Timer = 1000;
+
+            MobCount = 0;
+            MobDeath_Timer = 0;
+
+            for (uint8 i = 0; i < MAX_NPC_AMOUNT; ++i)
+                RingMobGUID[i] = 0;
+
+            RingBossGUID = 0;
+
+            CanWalk = false;
+        }
+
         InstanceScript* instance;
 
         uint8 EventPhase;
@@ -144,20 +161,9 @@ public:
 
         void Reset() override
         {
-            me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
-
-            EventPhase = 0;
-            Event_Timer = 1000;
-
-            MobCount = 0;
-            MobDeath_Timer = 0;
+            Initialize();
 
-            for (uint8 i = 0; i < MAX_NPC_AMOUNT; ++i)
-                RingMobGUID[i] = 0;
-
-            RingBossGUID = 0;
-
-            CanWalk = false;
+            me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
         }
 
         /// @todo move them to center
@@ -353,7 +359,17 @@ public:
 
     struct npc_phalanxAI : public ScriptedAI
     {
-        npc_phalanxAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_phalanxAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            ThunderClap_Timer = 12000;
+            FireballVolley_Timer = 0;
+            MightyBlow_Timer = 15000;
+        }
 
         uint32 ThunderClap_Timer;
         uint32 FireballVolley_Timer;
@@ -361,9 +377,7 @@ public:
 
         void Reset() override
         {
-            ThunderClap_Timer = 12000;
-            FireballVolley_Timer = 0;
-            MightyBlow_Timer = 15000;
+            Initialize();
         }
 
         void UpdateAI(uint32 diff) override
@@ -1238,9 +1252,16 @@ public:
     {
         npc_rocknotAI(Creature* creature) : npc_escortAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            BreakKeg_Timer = 0;
+            BreakDoor_Timer = 0;
+        }
+
         InstanceScript* instance;
 
         uint32 BreakKeg_Timer;
@@ -1251,8 +1272,7 @@ public:
             if (HasEscortState(STATE_ESCORT_ESCORTING))
                 return;
 
-            BreakKeg_Timer = 0;
-            BreakDoor_Timer = 0;
+            Initialize();
         }
 
         void DoGo(uint32 id, uint32 state)
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/boss_tomb_of_seven.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/boss_tomb_of_seven.cpp
index 83464c12230..77a8c68d28e 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/boss_tomb_of_seven.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/boss_tomb_of_seven.cpp
@@ -157,12 +157,18 @@ class boss_doomrel : public CreatureScript
         {
             boss_doomrelAI(Creature* creature) : ScriptedAI(creature)
             {
+                Initialize();
                 _instance = creature->GetInstanceScript();
             }
 
-            void Reset() override
+            void Initialize()
             {
                 _voidwalkers = false;
+            }
+
+            void Reset() override
+            {
+                Initialize();
 
                 me->setFaction(FACTION_FRIEND);
 
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_gyth.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_gyth.cpp
index ed62e26075c..ea92aa91b69 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_gyth.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_gyth.cpp
@@ -53,13 +53,21 @@ public:
 
     struct boss_gythAI : public BossAI
     {
-        boss_gythAI(Creature* creature) : BossAI(creature, DATA_GYTH) { }
+        boss_gythAI(Creature* creature) : BossAI(creature, DATA_GYTH)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            SummonedRend = false;
+        }
 
         bool SummonedRend;
 
         void Reset() override
         {
-            SummonedRend = false;
+            Initialize();
             if (instance->GetBossState(DATA_GYTH) == IN_PROGRESS)
             {
                 instance->SetBossState(DATA_GYTH, DONE);
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_halycon.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_halycon.cpp
index d5f7a4ce34b..b85cf4611ac 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_halycon.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_halycon.cpp
@@ -45,12 +45,20 @@ public:
 
     struct boss_halyconAI : public BossAI
     {
-        boss_halyconAI(Creature* creature) : BossAI(creature, DATA_HALYCON) { }
+        boss_halyconAI(Creature* creature) : BossAI(creature, DATA_HALYCON)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Summoned = false;
+        }
 
         void Reset() override
         {
             _Reset();
-            Summoned = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_lord_valthalak.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_lord_valthalak.cpp
index 23593442e86..bc1bdca1f61 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_lord_valthalak.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_lord_valthalak.cpp
@@ -46,15 +46,23 @@ public:
 
     struct boss_lord_valthalakAI : public BossAI
     {
-        boss_lord_valthalakAI(Creature* creature) : BossAI(creature, DATA_LORD_VALTHALAK) { }
+        boss_lord_valthalakAI(Creature* creature) : BossAI(creature, DATA_LORD_VALTHALAK)
+        {
+            Initialize();
+        }
 
-        void Reset() override
+        void Initialize()
         {
-            _Reset();
             frenzy40 = false;
             frenzy15 = false;
         }
 
+        void Reset() override
+        {
+            _Reset();
+            Initialize();
+        }
+
         void EnterCombat(Unit* /*who*/) override
         {
             _EnterCombat();
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_overlord_wyrmthalak.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_overlord_wyrmthalak.cpp
index cc6911b5da7..4b4633d54ca 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_overlord_wyrmthalak.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockSpire/boss_overlord_wyrmthalak.cpp
@@ -57,14 +57,22 @@ public:
 
     struct boss_overlordwyrmthalakAI : public BossAI
     {
-        boss_overlordwyrmthalakAI(Creature* creature) : BossAI(creature, DATA_OVERLORD_WYRMTHALAK) { }
+        boss_overlordwyrmthalakAI(Creature* creature) : BossAI(creature, DATA_OVERLORD_WYRMTHALAK)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Summoned = false;
+        }
 
         bool Summoned;
 
         void Reset() override
         {
             _Reset();
-            Summoned = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_chromaggus.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_chromaggus.cpp
index efe0a0e2a78..1a97f668558 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_chromaggus.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_chromaggus.cpp
@@ -73,6 +73,8 @@ public:
     {
         boss_chromaggusAI(Creature* creature) : BossAI(creature, BOSS_CHROMAGGUS)
         {
+            Initialize();
+
             // Select the 2 breaths that we are going to use until despawned
             // 5 possiblities for the first breath, 4 for the second, 20 total possiblites
             // This way we don't end up casting 2 of the same breath
@@ -173,12 +175,17 @@ public:
             EnterEvadeMode();
         }
 
+        void Initialize()
+        {
+            CurrentVurln_Spell = 0;     // We use this to store our last vulnerabilty spell so we can remove it later
+            Enraged = false;
+        }
+
         void Reset() override
         {
             _Reset();
 
-            CurrentVurln_Spell = 0;     // We use this to store our last vulnerabilty spell so we can remove it later
-            Enraged = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_nefarian.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_nefarian.cpp
index 262befdd3ec..d5a08d157d0 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_nefarian.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_nefarian.cpp
@@ -166,11 +166,19 @@ public:
 
     struct boss_victor_nefariusAI : public BossAI
     {
-        boss_victor_nefariusAI(Creature* creature) : BossAI(creature, BOSS_NEFARIAN) { }
+        boss_victor_nefariusAI(Creature* creature) : BossAI(creature, BOSS_NEFARIAN)
+        {
+            Initialize();
+        }
 
-        void Reset() override
+        void Initialize()
         {
             SpawnedAdds = 0;
+        }
+
+        void Reset() override
+        {
+            Initialize();
 
             if (me->GetMapId() == 469)
             {
@@ -386,15 +394,23 @@ public:
 
     struct boss_nefarianAI : public BossAI
     {
-        boss_nefarianAI(Creature* creature) : BossAI(creature, BOSS_NEFARIAN) { }
+        boss_nefarianAI(Creature* creature) : BossAI(creature, BOSS_NEFARIAN)
+        {
+            Initialize();
+        }
 
-        void Reset() override
+        void Initialize()
         {
             Phase3 = false;
             canDespawn = false;
             DespawnTimer = 30000;
         }
 
+        void Reset() override
+        {
+            Initialize();
+        }
+
         void JustReachedHome() override
         {
             canDespawn = true;
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_razorgore.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_razorgore.cpp
index 8d4a84197b1..b83cc4694ab 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_razorgore.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_razorgore.cpp
@@ -68,13 +68,21 @@ public:
 
     struct boss_razorgoreAI : public BossAI
     {
-        boss_razorgoreAI(Creature* creature) : BossAI(creature, BOSS_RAZORGORE) { }
+        boss_razorgoreAI(Creature* creature) : BossAI(creature, BOSS_RAZORGORE)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            secondPhase = false;
+        }
 
         void Reset() override
         {
             _Reset();
 
-            secondPhase = false;
+            Initialize();
             instance->SetData(DATA_EGG_EVENT, NOT_STARTED);
         }
 
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_vaelastrasz.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_vaelastrasz.cpp
index e3085854f4a..1282cdcd313 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_vaelastrasz.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackwingLair/boss_vaelastrasz.cpp
@@ -70,19 +70,24 @@ public:
     {
         boss_vaelAI(Creature* creature) : BossAI(creature, BOSS_VAELASTRAZ)
         {
+            Initialize();
             creature->SetFlag(UNIT_NPC_FLAGS, UNIT_NPC_FLAG_GOSSIP);
             creature->setFaction(35);
             creature->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
         }
 
+        void Initialize()
+        {
+            PlayerGUID = 0;
+            HasYelled = false;
+        }
+
         void Reset() override
         {
             _Reset();
 
             me->SetStandState(UNIT_STAND_STATE_DEAD);
-            PlayerGUID = 0;
-
-            HasYelled = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_garr.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_garr.cpp
index 2a1309dc097..a268890c25d 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_garr.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_garr.cpp
@@ -108,13 +108,21 @@ class npc_firesworn : public CreatureScript
 
         struct npc_fireswornAI : public ScriptedAI
         {
-            npc_fireswornAI(Creature* creature) : ScriptedAI(creature) { }
+            npc_fireswornAI(Creature* creature) : ScriptedAI(creature)
+            {
+                Initialize();
+            }
+
+            void Initialize()
+            {
+                immolateTimer = 4000;                              //These times are probably wrong
+            }
 
             uint32 immolateTimer;
 
             void Reset() override
             {
-                immolateTimer = 4000;                              //These times are probably wrong
+                Initialize();
             }
 
             void DamageTaken(Unit* /*attacker*/, uint32& damage) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_golemagg.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_golemagg.cpp
index f9757997731..c8b33e48852 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_golemagg.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_golemagg.cpp
@@ -131,12 +131,18 @@ class npc_core_rager : public CreatureScript
         {
             npc_core_ragerAI(Creature* creature) : ScriptedAI(creature)
             {
+                Initialize();
                 instance = creature->GetInstanceScript();
             }
 
+            void Initialize()
+            {
+                mangleTimer = 7 * IN_MILLISECONDS;                 // These times are probably wrong
+            }
+
             void Reset() override
             {
-                mangleTimer = 7*IN_MILLISECONDS;                 // These times are probably wrong
+                Initialize();
             }
 
             void DamageTaken(Unit* /*attacker*/, uint32& /*damage*/) override
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_ragnaros.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_ragnaros.cpp
index 6eafb41a8fa..4a0e22b1ba8 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_ragnaros.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/MoltenCore/boss_ragnaros.cpp
@@ -82,18 +82,24 @@ class boss_ragnaros : public CreatureScript
         {
             boss_ragnarosAI(Creature* creature) : BossAI(creature, BOSS_RAGNAROS)
             {
+                Initialize();
                 _introState = 0;
                 me->SetReactState(REACT_PASSIVE);
                 me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
             }
 
-            void Reset() override
+            void Initialize()
             {
-                BossAI::Reset();
                 _emergeTimer = 90000;
                 _hasYelledMagmaBurst = false;
                 _hasSubmergedOnce = false;
                 _isBanished = false;
+            }
+
+            void Reset() override
+            {
+                BossAI::Reset();
+                Initialize();
                 me->SetUInt32Value(UNIT_NPC_EMOTESTATE, 0);
             }
 
diff --git a/src/server/scripts/EasternKingdoms/Deadmines/boss_mr_smite.cpp b/src/server/scripts/EasternKingdoms/Deadmines/boss_mr_smite.cpp
index ffb3c02d101..b0222413513 100644
--- a/src/server/scripts/EasternKingdoms/Deadmines/boss_mr_smite.cpp
+++ b/src/server/scripts/EasternKingdoms/Deadmines/boss_mr_smite.cpp
@@ -52,9 +52,22 @@ public:
     {
         boss_mr_smiteAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            uiTrashTimer = urand(5000, 9000);
+            uiSlamTimer = 9000;
+            uiNimbleReflexesTimer = urand(15500, 31600);
+
+            uiHealth = 0;
+
+            uiPhase = 0;
+            uiTimer = 0;
+        }
+
         InstanceScript* instance;
 
         uint32 uiTrashTimer;
@@ -68,14 +81,7 @@ public:
 
         void Reset() override
         {
-            uiTrashTimer = urand(5000, 9000);
-            uiSlamTimer = 9000;
-            uiNimbleReflexesTimer = urand(15500, 31600);
-
-            uiHealth = 0;
-
-            uiPhase = 0;
-            uiTimer = 0;
+            Initialize();
 
             SetEquipmentSlots(false, EQUIP_SWORD, EQUIP_UNEQUIP, EQUIP_NO_CHANGE);
         }
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_curator.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_curator.cpp
index 9fe21313f71..f469bf6deb1 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_curator.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_curator.cpp
@@ -60,7 +60,19 @@ public:
 
     struct boss_curatorAI : public ScriptedAI
     {
-        boss_curatorAI(Creature* creature) : ScriptedAI(creature) { }
+        boss_curatorAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            AddTimer = 10000;
+            HatefulBoltTimer = 15000;                           //This time may be wrong
+            BerserkTimer = 720000;                              //12 minutes
+            Enraged = false;
+            Evocating = false;
+        }
 
         uint32 AddTimer;
         uint32 HatefulBoltTimer;
@@ -71,11 +83,7 @@ public:
 
         void Reset() override
         {
-            AddTimer = 10000;
-            HatefulBoltTimer = 15000;                           //This time may be wrong
-            BerserkTimer = 720000;                              //12 minutes
-            Enraged = false;
-            Evocating = false;
+            Initialize();
 
             me->ApplySpellImmune(0, IMMUNITY_DAMAGE, SPELL_SCHOOL_MASK_ARCANE, true);
         }
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_midnight.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_midnight.cpp
index 5d1e5451ab1..bbddf0aa5f5 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_midnight.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_midnight.cpp
@@ -62,13 +62,20 @@ public:
     {
         boss_attumenAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
+
             Phase = 1;
 
             CleaveTimer = urand(10000, 15000);
             CurseTimer = 30000;
             RandomYellTimer = urand(30000, 60000);              //Occasionally yell
             ChargeTimer = 20000;
+         }
+
+        void Initialize()
+        {
             ResetTimer = 0;
+            Midnight = 0;
         }
 
         uint64 Midnight;
@@ -81,8 +88,7 @@ public:
 
         void Reset() override
         {
-            ResetTimer = 0;
-            Midnight = 0;
+            Initialize();
         }
 
         void EnterEvadeMode() override
@@ -127,7 +133,17 @@ public:
 
     struct boss_midnightAI : public ScriptedAI
     {
-        boss_midnightAI(Creature* creature) : ScriptedAI(creature) { }
+        boss_midnightAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Phase = 1;
+            Attumen = 0;
+            Mount_Timer = 0;
+        }
 
         uint64 Attumen;
         uint8 Phase;
@@ -135,9 +151,7 @@ public:
 
         void Reset() override
         {
-            Phase = 1;
-            Attumen = 0;
-            Mount_Timer = 0;
+            Initialize();
 
             me->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
             me->SetVisible(true);
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_moroes.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_moroes.cpp
index 6ff1faf35b6..5b4f25aea44 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_moroes.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_moroes.cpp
@@ -105,12 +105,25 @@ public:
     {
         boss_moroesAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             memset(AddId, 0, sizeof(AddId));
             memset(AddGUID, 0, sizeof(AddGUID));
 
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            Vanish_Timer = 30000;
+            Blind_Timer = 35000;
+            Gouge_Timer = 23000;
+            Wait_Timer = 0;
+            CheckAdds_Timer = 5000;
+
+            Enrage = false;
+            InVanish = false;
+        }
+
         InstanceScript* instance;
 
         uint64 AddGUID[4];
@@ -127,14 +140,7 @@ public:
 
         void Reset() override
         {
-            Vanish_Timer = 30000;
-            Blind_Timer = 35000;
-            Gouge_Timer = 23000;
-            Wait_Timer = 0;
-            CheckAdds_Timer = 5000;
-
-            Enrage = false;
-            InVanish = false;
+            Initialize();
             if (me->IsAlive())
                 SpawnAdds();
 
@@ -391,7 +397,17 @@ public:
     struct boss_baroness_dorothea_millstipeAI : public boss_moroes_guestAI
     {
         //Shadow Priest
-        boss_baroness_dorothea_millstipeAI(Creature* creature) : boss_moroes_guestAI(creature) { }
+        boss_baroness_dorothea_millstipeAI(Creature* creature) : boss_moroes_guestAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            ManaBurn_Timer = 7000;
+            MindFlay_Timer = 1000;
+            ShadowWordPain_Timer = 6000;
+        }
 
         uint32 ManaBurn_Timer;
         uint32 MindFlay_Timer;
@@ -399,9 +415,7 @@ public:
 
         void Reset() override
         {
-            ManaBurn_Timer = 7000;
-            MindFlay_Timer = 1000;
-            ShadowWordPain_Timer = 6000;
+            Initialize();
 
             DoCast(me, SPELL_SHADOWFORM, true);
 
@@ -454,7 +468,17 @@ public:
     struct boss_baron_rafe_dreugerAI : public boss_moroes_guestAI
     {
         //Retr Pally
-        boss_baron_rafe_dreugerAI(Creature* creature) : boss_moroes_guestAI(creature){ }
+        boss_baron_rafe_dreugerAI(Creature* creature) : boss_moroes_guestAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            HammerOfJustice_Timer = 1000;
+            SealOfCommand_Timer = 7000;
+            JudgementOfCommand_Timer = SealOfCommand_Timer + 29000;
+        }
 
         uint32 HammerOfJustice_Timer;
         uint32 SealOfCommand_Timer;
@@ -462,9 +486,7 @@ public:
 
         void Reset() override
         {
-            HammerOfJustice_Timer = 1000;
-            SealOfCommand_Timer = 7000;
-            JudgementOfCommand_Timer = SealOfCommand_Timer + 29000;
+            Initialize();
 
             boss_moroes_guestAI::Reset();
         }
@@ -511,7 +533,18 @@ public:
     struct boss_lady_catriona_von_indiAI : public boss_moroes_guestAI
     {
         //Holy Priest
-        boss_lady_catriona_von_indiAI(Creature* creature) : boss_moroes_guestAI(creature) { }
+        boss_lady_catriona_von_indiAI(Creature* creature) : boss_moroes_guestAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            DispelMagic_Timer = 11000;
+            GreaterHeal_Timer = 1500;
+            HolyFire_Timer = 5000;
+            PowerWordShield_Timer = 1000;
+        }
 
         uint32 DispelMagic_Timer;
         uint32 GreaterHeal_Timer;
@@ -520,10 +553,7 @@ public:
 
         void Reset() override
         {
-            DispelMagic_Timer = 11000;
-            GreaterHeal_Timer = 1500;
-            HolyFire_Timer = 5000;
-            PowerWordShield_Timer = 1000;
+            Initialize();
 
             AcquireGUID();
 
@@ -581,7 +611,18 @@ public:
     struct boss_lady_keira_berrybuckAI : public boss_moroes_guestAI
     {
         //Holy Pally
-        boss_lady_keira_berrybuckAI(Creature* creature) : boss_moroes_guestAI(creature)  { }
+        boss_lady_keira_berrybuckAI(Creature* creature) : boss_moroes_guestAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Cleanse_Timer = 13000;
+            GreaterBless_Timer = 1000;
+            HolyLight_Timer = 7000;
+            DivineShield_Timer = 31000;
+        }
 
         uint32 Cleanse_Timer;
         uint32 GreaterBless_Timer;
@@ -590,10 +631,7 @@ public:
 
         void Reset() override
         {
-            Cleanse_Timer = 13000;
-            GreaterBless_Timer = 1000;
-            HolyLight_Timer = 7000;
-            DivineShield_Timer = 31000;
+            Initialize();
 
             AcquireGUID();
 
@@ -655,7 +693,17 @@ public:
     struct boss_lord_robin_darisAI : public boss_moroes_guestAI
     {
         //Arms Warr
-        boss_lord_robin_darisAI(Creature* creature) : boss_moroes_guestAI(creature) { }
+        boss_lord_robin_darisAI(Creature* creature) : boss_moroes_guestAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Hamstring_Timer = 7000;
+            MortalStrike_Timer = 10000;
+            WhirlWind_Timer = 21000;
+        }
 
         uint32 Hamstring_Timer;
         uint32 MortalStrike_Timer;
@@ -663,9 +711,7 @@ public:
 
         void Reset() override
         {
-            Hamstring_Timer = 7000;
-            MortalStrike_Timer = 10000;
-            WhirlWind_Timer = 21000;
+            Initialize();
 
             boss_moroes_guestAI::Reset();
         }
@@ -711,7 +757,18 @@ public:
     struct boss_lord_crispin_ferenceAI : public boss_moroes_guestAI
     {
         //Arms Warr
-        boss_lord_crispin_ferenceAI(Creature* creature) : boss_moroes_guestAI(creature) { }
+        boss_lord_crispin_ferenceAI(Creature* creature) : boss_moroes_guestAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Disarm_Timer = 6000;
+            HeroicStrike_Timer = 10000;
+            ShieldBash_Timer = 8000;
+            ShieldWall_Timer = 4000;
+        }
 
         uint32 Disarm_Timer;
         uint32 HeroicStrike_Timer;
@@ -720,10 +777,7 @@ public:
 
         void Reset() override
         {
-            Disarm_Timer = 6000;
-            HeroicStrike_Timer = 10000;
-            ShieldBash_Timer = 8000;
-            ShieldWall_Timer = 4000;
+            Initialize();
 
             boss_moroes_guestAI::Reset();
         }
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_netherspite.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_netherspite.cpp
index ac24f868670..a928413fea0 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_netherspite.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_netherspite.cpp
@@ -78,6 +78,7 @@ public:
     {
         boss_netherspiteAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
 
             for (int i=0; i<3; ++i)
@@ -86,6 +87,19 @@ public:
                 BeamTarget[i] = 0;
                 BeamerGUID[i] = 0;
             }
+
+            PortalPhase = false;
+            PhaseTimer = 0;
+            EmpowermentTimer = 0;
+            PortalTimer = 0;
+        }
+
+        void Initialize()
+        {
+            Berserk = false;
+            NetherInfusionTimer = 540000;
+            VoidZoneTimer = 15000;
+            NetherbreathTimer = 3000;
         }
 
         InstanceScript* instance;
@@ -129,10 +143,7 @@ public:
 
         void Reset() override
         {
-            Berserk = false;
-            NetherInfusionTimer = 540000;
-            VoidZoneTimer = 15000;
-            NetherbreathTimer = 3000;
+            Initialize();
 
             HandleDoors(true);
             DestroyPortals();
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_nightbane.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_nightbane.cpp
index af9f8b72abf..9084a6b0371 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_nightbane.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_nightbane.cpp
@@ -78,10 +78,32 @@ public:
     {
         boss_nightbaneAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
             Intro = true;
         }
 
+        void Initialize()
+        {
+            BellowingRoarTimer = 30000;
+            CharredEarthTimer = 15000;
+            DistractingAshTimer = 20000;
+            SmolderingBreathTimer = 10000;
+            TailSweepTimer = 12000;
+            RainofBonesTimer = 10000;
+            SmokingBlastTimer = 20000;
+            FireballBarrageTimer = 13000;
+            SearingCindersTimer = 14000;
+            WaitTimer = 1000;
+
+            Phase = 1;
+            FlyCount = 0;
+            MovePhase = 0;
+
+            Flying = false;
+            Movement = false;
+        }
+
         InstanceScript* instance;
 
         uint32 Phase;
@@ -111,20 +133,7 @@ public:
 
         void Reset() override
         {
-            BellowingRoarTimer = 30000;
-            CharredEarthTimer = 15000;
-            DistractingAshTimer = 20000;
-            SmolderingBreathTimer = 10000;
-            TailSweepTimer = 12000;
-            RainofBonesTimer = 10000;
-            SmokingBlastTimer = 20000;
-            FireballBarrageTimer = 13000;
-            SearingCindersTimer = 14000;
-            WaitTimer = 1000;
-
-            Phase =1;
-            FlyCount = 0;
-            MovePhase = 0;
+            Initialize();
 
             me->SetSpeed(MOVE_RUN, 2.0f);
             me->SetDisableGravity(true);
@@ -138,9 +147,6 @@ public:
 
             HandleTerraceDoors(true);
 
-            Flying = false;
-            Movement = false;
-
             if (!Intro)
             {
                 me->SetHomePosition(IntroWay[7][0], IntroWay[7][1], IntroWay[7][2], 0);
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_prince_malchezaar.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_prince_malchezaar.cpp
index 518c4eacbd9..c09b349f143 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_prince_malchezaar.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_prince_malchezaar.cpp
@@ -186,10 +186,33 @@ public:
     {
         boss_malchezaarAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
+
             instance = creature->GetInstanceScript();
             memset(axes, 0, sizeof(axes));
         }
 
+        void Initialize()
+        {
+            EnfeebleTimer = 30000;
+            EnfeebleResetTimer = 38000;
+            ShadowNovaTimer = 35500;
+            SWPainTimer = 20000;
+            AmplifyDamageTimer = 5000;
+            Cleave_Timer = 8000;
+            InfernalTimer = 40000;
+            InfernalCleanupTimer = 47000;
+            AxesTargetSwitchTimer = urand(7500, 20000);
+            SunderArmorTimer = urand(5000, 10000);
+            phase = 1;
+
+            for (uint8 i = 0; i < 5; ++i)
+            {
+                enfeeble_targets[i] = 0;
+                enfeeble_health[i] = 0;
+            }
+        }
+
         InstanceScript* instance;
         uint32 EnfeebleTimer;
         uint32 EnfeebleResetTimer;
@@ -218,27 +241,11 @@ public:
             InfernalCleanup();
             positions.clear();
 
-            for (uint8 i = 0; i < 5; ++i)
-            {
-                enfeeble_targets[i] = 0;
-                enfeeble_health[i] = 0;
-            }
+            Initialize();
 
             for (uint8 i = 0; i < TOTAL_INFERNAL_POINTS; ++i)
                 positions.push_back(&InfernalPoints[i]);
 
-            EnfeebleTimer = 30000;
-            EnfeebleResetTimer = 38000;
-            ShadowNovaTimer = 35500;
-            SWPainTimer = 20000;
-            AmplifyDamageTimer = 5000;
-            Cleave_Timer = 8000;
-            InfernalTimer = 40000;
-            InfernalCleanupTimer = 47000;
-            AxesTargetSwitchTimer = urand(7500, 20000);
-            SunderArmorTimer = urand(5000, 10000);
-            phase = 1;
-
             instance->HandleGameObject(instance->GetData64(DATA_GO_NETHER_DOOR), true);
         }
 
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_shade_of_aran.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_shade_of_aran.cpp
index 6a89adca967..c66f2b335c4 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_shade_of_aran.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_shade_of_aran.cpp
@@ -93,9 +93,35 @@ public:
     {
         boss_aranAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            SecondarySpellTimer = 5000;
+            NormalCastTimer = 0;
+            SuperCastTimer = 35000;
+            BerserkTimer = 720000;
+            CloseDoorTimer = 15000;
+
+            LastSuperSpell = rand32() % 3;
+
+            FlameWreathTimer = 0;
+            FlameWreathCheckTime = 0;
+
+            CurrentNormalSpell = 0;
+            ArcaneCooldown = 0;
+            FireCooldown = 0;
+            FrostCooldown = 0;
+
+            DrinkInterruptTimer = 10000;
+
+            ElementalsSpawned = false;
+            Drinking = false;
+            DrinkInturrupted = false;
+        }
+
         InstanceScript* instance;
 
         uint32 SecondarySpellTimer;
@@ -125,27 +151,7 @@ public:
 
         void Reset() override
         {
-            SecondarySpellTimer = 5000;
-            NormalCastTimer = 0;
-            SuperCastTimer = 35000;
-            BerserkTimer = 720000;
-            CloseDoorTimer = 15000;
-
-            LastSuperSpell = rand32() % 3;
-
-            FlameWreathTimer = 0;
-            FlameWreathCheckTime = 0;
-
-            CurrentNormalSpell = 0;
-            ArcaneCooldown = 0;
-            FireCooldown = 0;
-            FrostCooldown = 0;
-
-            DrinkInterruptTimer = 10000;
-
-            ElementalsSpawned = false;
-            Drinking = false;
-            DrinkInturrupted = false;
+            Initialize();
 
             // Not in progress
             instance->SetData(TYPE_ARAN, NOT_STARTED);
@@ -362,6 +368,10 @@ public:
                         Available[0] = SUPER_FLAME;
                         Available[1] = SUPER_AE;
                         break;
+                    default:
+                        Available[0] = 0;
+                        Available[1] = 0;
+                        break;
                 }
 
                 LastSuperSpell = Available[urand(0, 1)];
@@ -508,13 +518,21 @@ public:
 
     struct water_elementalAI : public ScriptedAI
     {
-        water_elementalAI(Creature* creature) : ScriptedAI(creature) { }
+        water_elementalAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            CastTimer = 2000 + (rand32() % 3000);
+        }
 
         uint32 CastTimer;
 
         void Reset() override
         {
-            CastTimer = 2000 + (rand32() % 3000);
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/boss_terestian_illhoof.cpp b/src/server/scripts/EasternKingdoms/Karazhan/boss_terestian_illhoof.cpp
index 9b66beb5986..ed40c18f70e 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/boss_terestian_illhoof.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/boss_terestian_illhoof.cpp
@@ -79,16 +79,22 @@ public:
     {
         npc_kilrekAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            AmplifyTimer = 2000;
+        }
+
         InstanceScript* instance;
 
         uint32 AmplifyTimer;
 
         void Reset() override
         {
-            AmplifyTimer = 2000;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -131,13 +137,21 @@ public:
 
     struct npc_demon_chainAI : public ScriptedAI
     {
-        npc_demon_chainAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_demon_chainAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            SacrificeGUID = 0;
+        }
 
         uint64 SacrificeGUID;
 
         void Reset() override
         {
-            SacrificeGUID = 0;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -203,13 +217,21 @@ public:
 
     struct npc_fiendish_impAI : public ScriptedAI
     {
-        npc_fiendish_impAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_fiendish_impAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            FireboltTimer = 2000;
+        }
 
         uint32 FireboltTimer;
 
         void Reset() override
         {
-            FireboltTimer = 2000;
+            Initialize();
 
             me->ApplySpellImmune(0, IMMUNITY_SCHOOL, SPELL_SCHOOL_MASK_FIRE, true);
         }
@@ -247,11 +269,24 @@ public:
     {
         boss_terestianAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             for (uint8 i = 0; i < 2; ++i)
                 PortalGUID[i] = 0;
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            PortalsCount = 0;
+            SacrificeTimer = 30000;
+            ShadowboltTimer = 5000;
+            SummonTimer = 10000;
+            BerserkTimer = 600000;
+
+            SummonedPortals = false;
+            Berserk = false;
+        }
+
         InstanceScript* instance;
 
         uint64 PortalGUID[2];
@@ -281,14 +316,7 @@ public:
                 }
             }
 
-            PortalsCount        =     0;
-            SacrificeTimer      = 30000;
-            ShadowboltTimer     =  5000;
-            SummonTimer         = 10000;
-            BerserkTimer        = 600000;
-
-            SummonedPortals     = false;
-            Berserk             = false;
+            Initialize();
 
             instance->SetData(TYPE_TERESTIAN, NOT_STARTED);
 
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp b/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp
index 19ec8da7fc9..ce8223c90cf 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp
@@ -125,9 +125,22 @@ public:
     {
         boss_dorotheeAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            AggroTimer = 500;
+
+            WaterBoltTimer = 5000;
+            FearTimer = 15000;
+            SummonTitoTimer = 47500;
+
+            SummonedTito = false;
+            TitoDied = false;
+        }
+
         InstanceScript* instance;
 
         uint32 AggroTimer;
@@ -141,14 +154,7 @@ public:
 
         void Reset() override
         {
-            AggroTimer = 500;
-
-            WaterBoltTimer = 5000;
-            FearTimer = 15000;
-            SummonTitoTimer = 47500;
-
-            SummonedTito = false;
-            TitoDied = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
@@ -237,15 +243,23 @@ public:
 
     struct npc_titoAI : public ScriptedAI
     {
-        npc_titoAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_titoAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            DorotheeGUID = 0;
+            YipTimer = 10000;
+        }
 
         uint64 DorotheeGUID;
         uint32 YipTimer;
 
         void Reset() override
         {
-            DorotheeGUID = 0;
-            YipTimer = 10000;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -305,9 +319,17 @@ public:
     {
         boss_strawmanAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            AggroTimer = 13000;
+            BrainBashTimer = 5000;
+            BrainWipeTimer = 7000;
+        }
+
         InstanceScript* instance;
 
         uint32 AggroTimer;
@@ -316,9 +338,7 @@ public:
 
         void Reset() override
         {
-            AggroTimer = 13000;
-            BrainBashTimer = 5000;
-            BrainWipeTimer = 7000;
+            Initialize();
         }
 
         void AttackStart(Unit* who) override
@@ -419,9 +439,19 @@ public:
     {
         boss_tinheadAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            AggroTimer = 15000;
+            CleaveTimer = 5000;
+            RustTimer = 30000;
+
+            RustCount = 0;
+        }
+
         InstanceScript* instance;
 
         uint32 AggroTimer;
@@ -432,11 +462,7 @@ public:
 
         void Reset() override
         {
-            AggroTimer = 15000;
-            CleaveTimer = 5000;
-            RustTimer   = 30000;
-
-            RustCount   = 0;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
@@ -528,9 +554,18 @@ public:
     {
         boss_roarAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            AggroTimer = 20000;
+            MangleTimer = 5000;
+            ShredTimer = 10000;
+            ScreamTimer = 15000;
+        }
+
         InstanceScript* instance;
 
         uint32 AggroTimer;
@@ -540,10 +575,7 @@ public:
 
         void Reset() override
         {
-            AggroTimer = 20000;
-            MangleTimer = 5000;
-            ShredTimer  = 10000;
-            ScreamTimer = 15000;
+            Initialize();
         }
 
         void MoveInLineOfSight(Unit* who) override
@@ -636,9 +668,16 @@ public:
     {
         boss_croneAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            CycloneTimer = 30000;
+            ChainLightningTimer = 10000;
+        }
+
         InstanceScript* instance;
 
         uint32 CycloneTimer;
@@ -646,8 +685,7 @@ public:
 
         void Reset() override
         {
-            CycloneTimer = 30000;
-            ChainLightningTimer = 10000;
+            Initialize();
         }
 
         void JustReachedHome() override
@@ -717,13 +755,21 @@ public:
 
     struct npc_cycloneAI : public ScriptedAI
     {
-        npc_cycloneAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_cycloneAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            MoveTimer = 1000;
+        }
 
         uint32 MoveTimer;
 
         void Reset() override
         {
-            MoveTimer = 1000;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -812,9 +858,22 @@ public:
     {
         boss_bigbadwolfAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            ChaseTimer = 30000;
+            FearTimer = urand(25000, 35000);
+            SwipeTimer = 5000;
+
+            HoodGUID = 0;
+            TempThreat = 0;
+
+            IsChasing = false;
+        }
+
         InstanceScript* instance;
 
         uint32 ChaseTimer;
@@ -828,14 +887,7 @@ public:
 
         void Reset() override
         {
-            ChaseTimer = 30000;
-            FearTimer = urand(25000, 35000);
-            SwipeTimer = 5000;
-
-            HoodGUID = 0;
-            TempThreat = 0;
-
-            IsChasing = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override
@@ -1011,12 +1063,30 @@ public:
     {
         boss_julianneAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
             EntryYellTimer = 1000;
             AggroYellTimer = 10000;
             IsFakingDeath = false;
         }
 
+        void Initialize()
+        {
+            RomuloGUID = 0;
+            Phase = PHASE_JULIANNE;
+
+            BlindingPassionTimer = 30000;
+            DevotionTimer = 15000;
+            EternalAffectionTimer = 25000;
+            PowerfulAttractionTimer = 5000;
+            SummonRomuloTimer = 10000;
+            DrinkPoisonTimer = 0;
+            ResurrectSelfTimer = 0;
+
+            SummonedRomulo = false;
+            RomuloDead = false;
+        }
+
         InstanceScript* instance;
 
         uint32 EntryYellTimer;
@@ -1041,25 +1111,12 @@ public:
 
         void Reset() override
         {
-            RomuloGUID = 0;
-            Phase = PHASE_JULIANNE;
-
-            BlindingPassionTimer = 30000;
-            DevotionTimer = 15000;
-            EternalAffectionTimer = 25000;
-            PowerfulAttractionTimer = 5000;
-            SummonRomuloTimer = 10000;
-            DrinkPoisonTimer = 0;
-            ResurrectSelfTimer = 0;
-
+            Initialize();
             if (IsFakingDeath)
             {
                 Resurrect(me);
                 IsFakingDeath = false;
             }
-
-            SummonedRomulo = false;
-            RomuloDead = false;
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -1131,11 +1188,27 @@ public:
     {
         boss_romuloAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
             EntryYellTimer = 8000;
             AggroYellTimer = 15000;
         }
 
+        void Initialize()
+        {
+            JulianneGUID = 0;
+            Phase = PHASE_ROMULO;
+
+            BackwardLungeTimer = 15000;
+            DaringTimer = 20000;
+            DeadlySwatheTimer = 25000;
+            PoisonThrustTimer = 10000;
+            ResurrectTimer = 10000;
+
+            IsFakingDeath = false;
+            JulianneDead = false;
+        }
+
         InstanceScript* instance;
 
         uint64 JulianneGUID;
@@ -1154,17 +1227,7 @@ public:
 
         void Reset() override
         {
-            JulianneGUID = 0;
-            Phase = PHASE_ROMULO;
-
-            BackwardLungeTimer = 15000;
-            DaringTimer = 20000;
-            DeadlySwatheTimer = 25000;
-            PoisonThrustTimer = 10000;
-            ResurrectTimer = 10000;
-
-            IsFakingDeath = false;
-            JulianneDead = false;
+            Initialize();
         }
 
         void JustReachedHome() override
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp b/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp
index c89950b7de3..c37829e26d5 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp
@@ -131,11 +131,23 @@ public:
     {
         npc_barnesAI(Creature* creature) : npc_escortAI(creature)
         {
+            Initialize();
             RaidWiped = false;
             m_uiEventId = 0;
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            m_uiSpotlightGUID = 0;
+
+            TalkCount = 0;
+            TalkTimer = 2000;
+            WipeTimer = 5000;
+
+            PerformanceReady = false;
+        }
+
         InstanceScript* instance;
 
         uint64 m_uiSpotlightGUID;
@@ -150,13 +162,7 @@ public:
 
         void Reset() override
         {
-            m_uiSpotlightGUID = 0;
-
-            TalkCount = 0;
-            TalkTimer = 2000;
-            WipeTimer = 5000;
-
-            PerformanceReady = false;
+            Initialize();
 
             m_uiEventId = instance->GetData(DATA_OPERA_PERFORMANCE);
         }
@@ -476,9 +482,20 @@ public:
     {
         npc_image_of_medivhAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
+            Step = 0;
+            FireArcanagosTimer = 0;
+            FireMedivhTimer = 0;
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            ArcanagosGUID = 0;
+            EventStarted = false;
+            YellTimer = 0;
+        }
+
         InstanceScript* instance;
 
         uint64 ArcanagosGUID;
@@ -492,9 +509,7 @@ public:
 
         void Reset() override
         {
-            ArcanagosGUID = 0;
-            EventStarted = false;
-            YellTimer = 0;
+            Initialize();
 
             if (instance->GetData64(DATA_IMAGE_OF_MEDIVH) == 0)
             {
diff --git a/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_felblood_kaelthas.cpp b/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_felblood_kaelthas.cpp
index 7944011c7a0..1aafb32cef9 100644
--- a/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_felblood_kaelthas.cpp
+++ b/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_felblood_kaelthas.cpp
@@ -103,9 +103,29 @@ public:
     {
         boss_felblood_kaelthasAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            /// @todo Timers
+            FireballTimer = 0;
+            PhoenixTimer = 10000;
+            FlameStrikeTimer = 25000;
+            CombatPulseTimer = 0;
+
+            PyroblastTimer = 60000;
+
+            GravityLapseTimer = 0;
+            GravityLapsePhase = 0;
+
+            FirstGravityLapse = true;
+            HasTaunted = false;
+
+            Phase = 0;
+        }
+
         InstanceScript* instance;
 
         uint32 FireballTimer;
@@ -134,21 +154,7 @@ public:
 
         void Reset() override
         {
-            /// @todo Timers
-            FireballTimer = 0;
-            PhoenixTimer = 10000;
-            FlameStrikeTimer = 25000;
-            CombatPulseTimer = 0;
-
-            PyroblastTimer = 60000;
-
-            GravityLapseTimer = 0;
-            GravityLapsePhase = 0;
-
-            FirstGravityLapse = true;
-            HasTaunted = false;
-
-            Phase = 0;
+            Initialize();
 
             instance->SetBossState(DATA_KAELTHAS, NOT_STARTED);
         }
@@ -439,13 +445,19 @@ public:
     {
         npc_felkael_flamestrikeAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            FlameStrikeTimer = 5000;
         }
 
         uint32 FlameStrikeTimer;
 
         void Reset() override
         {
-            FlameStrikeTimer = 5000;
+            Initialize();
 
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
             me->setFaction(14);
@@ -481,9 +493,18 @@ public:
     {
         npc_felkael_phoenixAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
         }
 
+        void Initialize()
+        {
+            BurnTimer = 2000;
+            Death_Timer = 3000;
+            Rebirth = false;
+            FakeDeath = false;
+        }
+
         InstanceScript* instance;
         uint32 BurnTimer;
         uint32 Death_Timer;
@@ -495,10 +516,7 @@ public:
             me->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE + UNIT_FLAG_NON_ATTACKABLE);
             me->SetDisableGravity(true);
             DoCast(me, SPELL_PHOENIX_BURN, true);
-            BurnTimer = 2000;
-            Death_Timer = 3000;
-            Rebirth = false;
-            FakeDeath = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -592,13 +610,21 @@ public:
 
     struct npc_felkael_phoenix_eggAI : public ScriptedAI
     {
-        npc_felkael_phoenix_eggAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_felkael_phoenix_eggAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            HatchTimer = 10000;
+        }
 
         uint32 HatchTimer;
 
         void Reset() override
         {
-            HatchTimer = 10000;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
diff --git a/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_priestess_delrissa.cpp b/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_priestess_delrissa.cpp
index 40dedcf6d93..cc2af3dcea5 100644
--- a/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_priestess_delrissa.cpp
+++ b/src/server/scripts/EasternKingdoms/MagistersTerrace/boss_priestess_delrissa.cpp
@@ -117,11 +117,24 @@ public:
     {
         boss_priestess_delrissaAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             instance = creature->GetInstanceScript();
             memset(&m_auiLackeyGUID, 0, sizeof(m_auiLackeyGUID));
             LackeyEntryList.clear();
         }
 
+        void Initialize()
+        {
+            PlayersKilled = 0;
+
+            HealTimer = 15000;
+            RenewTimer = 10000;
+            ShieldTimer = 2000;
+            SWPainTimer = 5000;
+            DispelTimer = 7500;
+            ResetTimer = 5000;
+        }
+
         InstanceScript* instance;
 
         std::vector<uint32> LackeyEntryList;
@@ -138,14 +151,7 @@ public:
 
         void Reset() override
         {
-            PlayersKilled = 0;
-
-            HealTimer   = 15000;
-            RenewTimer  = 10000;
-            ShieldTimer = 2000;
-            SWPainTimer = 5000;
-            DispelTimer = 7500;
-            ResetTimer = 5000;
+            Initialize();
 
             InitializeLackeys();
         }
@@ -353,11 +359,23 @@ struct boss_priestess_lackey_commonAI : public ScriptedAI
 {
     boss_priestess_lackey_commonAI(Creature* creature) : ScriptedAI(creature)
     {
+        Initialize();
         instance = creature->GetInstanceScript();
         memset(&m_auiLackeyGUIDs, 0, sizeof(m_auiLackeyGUIDs));
         AcquireGUIDs();
     }
 
+    void Initialize()
+    {
+        UsedPotion = false;
+
+        // These guys does not follow normal threat system rules
+        // For later development, some alternative threat system should be made
+        // We do not know what this system is based upon, but one theory is class (healers=high threat, dps=medium, etc)
+        // We reset their threat frequently as an alternative until such a system exist
+        ResetThreatTimer = urand(5000, 20000);
+    }
+
     InstanceScript* instance;
 
     uint64 m_auiLackeyGUIDs[MAX_ACTIVE_LACKEY];
@@ -367,13 +385,7 @@ struct boss_priestess_lackey_commonAI : public ScriptedAI
 
     void Reset() override
     {
-        UsedPotion = false;
-
-        // These guys does not follow normal threat system rules
-        // For later development, some alternative threat system should be made
-        // We do not know what this system is based upon, but one theory is class (healers=high threat, dps=medium, etc)
-        // We reset their threat frequently as an alternative until such a system exist
-        ResetThreatTimer = urand(5000, 20000);
+        Initialize();
 
         // in case she is not alive and Reset was for some reason called, respawn her (most likely party wipe after killing her)
         if (Creature* pDelrissa = ObjectAccessor::GetCreature(*me, instance->GetData64(DATA_DELRISSA)))
@@ -493,7 +505,20 @@ public:
     struct boss_kagani_nightstrikeAI : public boss_priestess_lackey_commonAI
     {
         //Rogue
-        boss_kagani_nightstrikeAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_kagani_nightstrikeAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Gouge_Timer = 5500;
+            Kick_Timer = 7000;
+            Vanish_Timer = 2000;
+            Eviscerate_Timer = 6000;
+            Wait_Timer = 5000;
+            InVanish = false;
+        }
 
         uint32 Gouge_Timer;
         uint32 Kick_Timer;
@@ -504,12 +529,7 @@ public:
 
         void Reset() override
         {
-            Gouge_Timer = 5500;
-            Kick_Timer = 7000;
-            Vanish_Timer = 2000;
-            Eviscerate_Timer = 6000;
-            Wait_Timer = 5000;
-            InVanish = false;
+            Initialize();
             me->SetVisible(true);
 
             boss_priestess_lackey_commonAI::Reset();
@@ -597,7 +617,19 @@ public:
     struct boss_ellris_duskhallowAI : public boss_priestess_lackey_commonAI
     {
         //Warlock
-        boss_ellris_duskhallowAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_ellris_duskhallowAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Immolate_Timer = 6000;
+            Shadow_Bolt_Timer = 3000;
+            Seed_of_Corruption_Timer = 2000;
+            Curse_of_Agony_Timer = 1000;
+            Fear_Timer = 10000;
+        }
 
         uint32 Immolate_Timer;
         uint32 Shadow_Bolt_Timer;
@@ -607,11 +639,7 @@ public:
 
         void Reset() override
         {
-            Immolate_Timer = 6000;
-            Shadow_Bolt_Timer = 3000;
-            Seed_of_Corruption_Timer = 2000;
-            Curse_of_Agony_Timer = 1000;
-            Fear_Timer = 10000;
+            Initialize();
 
             boss_priestess_lackey_commonAI::Reset();
         }
@@ -688,15 +716,23 @@ public:
     struct boss_eramas_brightblazeAI : public boss_priestess_lackey_commonAI
     {
         //Monk
-        boss_eramas_brightblazeAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_eramas_brightblazeAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Knockdown_Timer = 6000;
+            Snap_Kick_Timer = 4500;
+        }
 
         uint32 Knockdown_Timer;
         uint32 Snap_Kick_Timer;
 
         void Reset() override
         {
-            Knockdown_Timer = 6000;
-            Snap_Kick_Timer = 4500;
+            Initialize();
 
             boss_priestess_lackey_commonAI::Reset();
         }
@@ -749,7 +785,24 @@ public:
     struct boss_yazzaiAI : public boss_priestess_lackey_commonAI
     {
         //Mage
-        boss_yazzaiAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_yazzaiAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            HasIceBlocked = false;
+
+            Polymorph_Timer = 1000;
+            Ice_Block_Timer = 20000;
+            Wait_Timer = 10000;
+            Blizzard_Timer = 8000;
+            Ice_Lance_Timer = 12000;
+            Cone_of_Cold_Timer = 10000;
+            Frostbolt_Timer = 3000;
+            Blink_Timer = 8000;
+        }
 
         bool HasIceBlocked;
 
@@ -764,16 +817,7 @@ public:
 
         void Reset() override
         {
-            HasIceBlocked = false;
-
-            Polymorph_Timer = 1000;
-            Ice_Block_Timer = 20000;
-            Wait_Timer = 10000;
-            Blizzard_Timer = 8000;
-            Ice_Lance_Timer = 12000;
-            Cone_of_Cold_Timer = 10000;
-            Frostbolt_Timer = 3000;
-            Blink_Timer = 8000;
+            Initialize();
 
             boss_priestess_lackey_commonAI::Reset();
         }
@@ -879,7 +923,20 @@ public:
     struct boss_warlord_salarisAI : public boss_priestess_lackey_commonAI
     {
         //Warrior
-        boss_warlord_salarisAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_warlord_salarisAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Intercept_Stun_Timer = 500;
+            Disarm_Timer = 6000;
+            Piercing_Howl_Timer = 10000;
+            Frightening_Shout_Timer = 18000;
+            Hamstring_Timer = 4500;
+            Mortal_Strike_Timer = 8000;
+        }
 
         uint32 Intercept_Stun_Timer;
         uint32 Disarm_Timer;
@@ -890,12 +947,7 @@ public:
 
         void Reset() override
         {
-            Intercept_Stun_Timer = 500;
-            Disarm_Timer = 6000;
-            Piercing_Howl_Timer = 10000;
-            Frightening_Shout_Timer = 18000;
-            Hamstring_Timer = 4500;
-            Mortal_Strike_Timer = 8000;
+            Initialize();
 
             boss_priestess_lackey_commonAI::Reset();
         }
@@ -1001,9 +1053,20 @@ public:
         //Hunter
         boss_garaxxasAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
         {
+            Initialize();
             m_uiPetGUID = 0;
         }
 
+        void Initialize()
+        {
+            Aimed_Shot_Timer = 6000;
+            Shoot_Timer = 2500;
+            Concussive_Shot_Timer = 8000;
+            Multi_Shot_Timer = 10000;
+            Wing_Clip_Timer = 4000;
+            Freezing_Trap_Timer = 15000;
+        }
+
         uint64 m_uiPetGUID;
 
         uint32 Aimed_Shot_Timer;
@@ -1015,12 +1078,7 @@ public:
 
         void Reset() override
         {
-            Aimed_Shot_Timer = 6000;
-            Shoot_Timer = 2500;
-            Concussive_Shot_Timer = 8000;
-            Multi_Shot_Timer = 10000;
-            Wing_Clip_Timer = 4000;
-            Freezing_Trap_Timer = 15000;
+            Initialize();
 
             Unit* pPet = ObjectAccessor::GetUnit(*me, m_uiPetGUID);
             if (!pPet)
@@ -1110,7 +1168,20 @@ public:
     struct boss_apokoAI : public boss_priestess_lackey_commonAI
     {
         //Shaman
-        boss_apokoAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_apokoAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Totem_Timer = 2000;
+            Totem_Amount = 1;
+            War_Stomp_Timer = 10000;
+            Purge_Timer = 8000;
+            Healing_Wave_Timer = 5000;
+            Frost_Shock_Timer = 7000;
+        }
 
         uint32 Totem_Timer;
         uint8  Totem_Amount;
@@ -1121,12 +1192,7 @@ public:
 
         void Reset() override
         {
-            Totem_Timer = 2000;
-            Totem_Amount = 1;
-            War_Stomp_Timer = 10000;
-            Purge_Timer = 8000;
-            Healing_Wave_Timer = 5000;
-            Frost_Shock_Timer = 7000;
+            Initialize();
 
             boss_priestess_lackey_commonAI::Reset();
         }
@@ -1199,7 +1265,19 @@ public:
     struct boss_zelfanAI : public boss_priestess_lackey_commonAI
     {
         //Engineer
-        boss_zelfanAI(Creature* creature) : boss_priestess_lackey_commonAI(creature) { }
+        boss_zelfanAI(Creature* creature) : boss_priestess_lackey_commonAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Goblin_Dragon_Gun_Timer = 20000;
+            Rocket_Launch_Timer = 7000;
+            Recombobulate_Timer = 4000;
+            High_Explosive_Sheep_Timer = 10000;
+            Fel_Iron_Bomb_Timer = 15000;
+        }
 
         uint32 Goblin_Dragon_Gun_Timer;
         uint32 Rocket_Launch_Timer;
@@ -1209,11 +1287,7 @@ public:
 
         void Reset() override
         {
-            Goblin_Dragon_Gun_Timer = 20000;
-            Rocket_Launch_Timer = 7000;
-            Recombobulate_Timer = 4000;
-            High_Explosive_Sheep_Timer = 10000;
-            Fel_Iron_Bomb_Timer = 15000;
+            Initialize();
 
             boss_priestess_lackey_commonAI::Reset();
         }
diff --git a/src/server/scripts/EasternKingdoms/MagistersTerrace/magisters_terrace.cpp b/src/server/scripts/EasternKingdoms/MagistersTerrace/magisters_terrace.cpp
index 28f4800b6cf..a20f595183f 100644
--- a/src/server/scripts/EasternKingdoms/MagistersTerrace/magisters_terrace.cpp
+++ b/src/server/scripts/EasternKingdoms/MagistersTerrace/magisters_terrace.cpp
@@ -115,13 +115,21 @@ public:
 
     struct npc_kalecgosAI : public ScriptedAI
     {
-        npc_kalecgosAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_kalecgosAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            m_uiTransformTimer = 0;
+        }
 
         uint32 m_uiTransformTimer;
 
         void Reset() override
         {
-            m_uiTransformTimer = 0;
+            Initialize();
 
             // we must assume he appear as dragon somewhere outside the platform of orb, and then move directly to here
             if (me->GetEntry() != NPC_KAEL)
diff --git a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter1.cpp b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter1.cpp
index 95990f18829..7355674963a 100644
--- a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter1.cpp
+++ b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter1.cpp
@@ -102,9 +102,21 @@ public:
     {
         npc_unworthy_initiateAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             me->SetReactState(REACT_PASSIVE);
             if (!me->GetCurrentEquipmentId())
                 me->SetCurrentEquipmentId(me->GetOriginalEquipmentId());
+
+            playerGUID = 0;
+            wait_timer = 0;
+            anchorX = 0.f;
+            anchorY = 0.f;
+        }
+
+        void Initialize()
+        {
+            anchorGUID = 0;
+            phase = PHASE_CHAINED;
         }
 
         uint64 playerGUID;
@@ -117,8 +129,7 @@ public:
 
         void Reset() override
         {
-            anchorGUID = 0;
-            phase = PHASE_CHAINED;
+            Initialize();
             events.Reset();
             me->setFaction(7);
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_IMMUNE_TO_PC);
@@ -516,7 +527,15 @@ public:
     {
         npc_death_knight_initiateAI(Creature* creature) : CombatAI(creature)
         {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            m_uiDuelerGUID = 0;
+            m_uiDuelTimer = 5000;
             m_bIsDuelInProgress = false;
+            lose = false;
         }
 
         bool lose;
@@ -526,15 +545,11 @@ public:
 
         void Reset() override
         {
-            lose = false;
+            Initialize();
+
             me->RestoreFaction();
             CombatAI::Reset();
-
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_UNK_15);
-
-            m_uiDuelerGUID = 0;
-            m_uiDuelTimer = 5000;
-            m_bIsDuelInProgress = false;
         }
 
         void SpellHit(Unit* pCaster, const SpellInfo* pSpell) override
@@ -630,9 +645,12 @@ class npc_dark_rider_of_acherus : public CreatureScript
 
         struct npc_dark_rider_of_acherusAI : public ScriptedAI
         {
-            npc_dark_rider_of_acherusAI(Creature* creature) : ScriptedAI(creature) { }
+            npc_dark_rider_of_acherusAI(Creature* creature) : ScriptedAI(creature)
+            {
+                Initialize();
+            }
 
-            void Reset() override
+            void Initialize()
             {
                 PhaseTimer = 4000;
                 Phase = 0;
@@ -640,6 +658,11 @@ class npc_dark_rider_of_acherus : public CreatureScript
                 TargetGUID = 0;
             }
 
+            void Reset() override
+            {
+                Initialize();
+            }
+
             void UpdateAI(uint32 diff) override
             {
                 if (!Intro || !TargetGUID)
@@ -1067,18 +1090,24 @@ class npc_scarlet_miner : public CreatureScript
         {
             npc_scarlet_minerAI(Creature* creature) : npc_escortAI(creature)
             {
+                Initialize();
                 me->SetReactState(REACT_PASSIVE);
             }
 
+            void Initialize()
+            {
+                carGUID = 0;
+                IntroTimer = 0;
+                IntroPhase = 0;
+            }
+
             uint32 IntroTimer;
             uint32 IntroPhase;
             uint64 carGUID;
 
             void Reset() override
             {
-                carGUID = 0;
-                IntroTimer = 0;
-                IntroPhase = 0;
+                Initialize();
             }
 
             void IsSummonedBy(Unit* summoner) override
diff --git a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter2.cpp b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter2.cpp
index 8e3743ad5e2..08e3de1941a 100644
--- a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter2.cpp
+++ b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter2.cpp
@@ -51,7 +51,17 @@ public:
 
     struct npc_crusade_persuadedAI : public ScriptedAI
     {
-        npc_crusade_persuadedAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_crusade_persuadedAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            speechTimer = 0;
+            speechCounter = 0;
+            playerGUID = 0;
+        }
 
         uint32 speechTimer;
         uint32 speechCounter;
@@ -59,9 +69,7 @@ public:
 
         void Reset() override
         {
-            speechTimer = 0;
-            speechCounter = 0;
-            playerGUID = 0;
+            Initialize();
             me->SetReactState(REACT_AGGRESSIVE);
             me->RestoreFaction();
         }
@@ -207,16 +215,22 @@ public:
     {
         npc_koltira_deathweaverAI(Creature* creature) : npc_escortAI(creature)
         {
+            Initialize();
             me->SetReactState(REACT_DEFENSIVE);
         }
 
+        void Initialize()
+        {
+            wave = 0;
+            waveTimer = 3000;
+            valrothGUID = 0;
+        }
+
         void Reset() override
         {
             if (!HasEscortState(STATE_ESCORT_ESCORTING))
             {
-                wave = 0;
-                waveTimer = 3000;
-                valrothGUID = 0;
+                Initialize();
                 me->LoadEquipment(0, true);
                 me->RemoveAurasDueToSpell(SPELL_ANTI_MAGIC_ZONE);
                 me->RemoveAurasDueToSpell(SPELL_KOLTIRA_TRANSFORM);
@@ -467,7 +481,17 @@ public:
 
     struct npc_high_inquisitor_valrothAI : public ScriptedAI
     {
-        npc_high_inquisitor_valrothAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_high_inquisitor_valrothAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            uiRenew_timer = 1000;
+            uiInquisitor_Penance_timer = 2000;
+            uiValroth_Smite_timer = 1000;
+        }
 
         uint32 uiRenew_timer;
         uint32 uiInquisitor_Penance_timer;
@@ -475,9 +499,7 @@ public:
 
         void Reset() override
         {
-            uiRenew_timer = 1000;
-            uiInquisitor_Penance_timer = 2000;
-            uiValroth_Smite_timer = 1000;
+            Initialize();
         }
 
         void EnterCombat(Unit* who) override
@@ -603,7 +625,17 @@ public:
 
     struct npc_a_special_surpriseAI : public ScriptedAI
     {
-        npc_a_special_surpriseAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_a_special_surpriseAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            ExecuteSpeech_Timer = 0;
+            ExecuteSpeech_Counter = 0;
+            PlayerGUID = 0;
+        }
 
         uint32 ExecuteSpeech_Timer;
         uint32 ExecuteSpeech_Counter;
@@ -611,9 +643,7 @@ public:
 
         void Reset() override
         {
-            ExecuteSpeech_Timer = 0;
-            ExecuteSpeech_Counter = 0;
-            PlayerGUID = 0;
+            Initialize();
 
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_IMMUNE_TO_PC);
         }
diff --git a/src/server/scripts/Outland/zone_zangarmarsh.cpp b/src/server/scripts/Outland/zone_zangarmarsh.cpp
index b9736c523c3..c7627d1aa04 100644
--- a/src/server/scripts/Outland/zone_zangarmarsh.cpp
+++ b/src/server/scripts/Outland/zone_zangarmarsh.cpp
@@ -178,6 +178,12 @@ public:
         npc_cooshcooshAI(Creature* creature) : ScriptedAI(creature)
         {
             m_uiNormFaction = creature->getFaction();
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            LightningBolt_Timer = 2000;
         }
 
         uint32 m_uiNormFaction;
@@ -185,7 +191,7 @@ public:
 
         void Reset() override
         {
-            LightningBolt_Timer = 2000;
+            Initialize();
             if (me->getFaction() != m_uiNormFaction)
                 me->setFaction(m_uiNormFaction);
         }
diff --git a/src/server/scripts/Pet/pet_dk.cpp b/src/server/scripts/Pet/pet_dk.cpp
index 34da2a242f4..b24336cb33c 100644
--- a/src/server/scripts/Pet/pet_dk.cpp
+++ b/src/server/scripts/Pet/pet_dk.cpp
@@ -43,12 +43,20 @@ class npc_pet_dk_ebon_gargoyle : public CreatureScript
 
         struct npc_pet_dk_ebon_gargoyleAI : CasterAI
         {
-            npc_pet_dk_ebon_gargoyleAI(Creature* creature) : CasterAI(creature) { }
+            npc_pet_dk_ebon_gargoyleAI(Creature* creature) : CasterAI(creature)
+            {
+                Initialize();
+            }
 
-            void InitializeAI() override
+            void Initialize()
             {
                 // Not needed to be despawned now
                 _despawnTimer = 0;
+            }
+
+            void InitializeAI() override
+            {
+                Initialize();
 
                 CasterAI::InitializeAI();
                 uint64 ownerGuid = me->GetOwnerGUID();
diff --git a/src/server/scripts/Pet/pet_generic.cpp b/src/server/scripts/Pet/pet_generic.cpp
index cfb4820c040..d0e950dec32 100644
--- a/src/server/scripts/Pet/pet_generic.cpp
+++ b/src/server/scripts/Pet/pet_generic.cpp
@@ -39,11 +39,19 @@ class npc_pet_gen_mojo : public CreatureScript
 
         struct npc_pet_gen_mojoAI : public ScriptedAI
         {
-            npc_pet_gen_mojoAI(Creature* creature) : ScriptedAI(creature) { }
+            npc_pet_gen_mojoAI(Creature* creature) : ScriptedAI(creature)
+            {
+                Initialize();
+            }
 
-            void Reset() override
+            void Initialize()
             {
                 _victimGUID = 0;
+            }
+
+            void Reset() override
+            {
+                Initialize();
 
                 if (Unit* owner = me->GetOwner())
                     me->GetMotionMaster()->MoveFollow(owner, 0.0f, 0.0f);
diff --git a/src/server/scripts/Pet/pet_hunter.cpp b/src/server/scripts/Pet/pet_hunter.cpp
index 8fd6cb54b0e..20412415fbe 100644
--- a/src/server/scripts/Pet/pet_hunter.cpp
+++ b/src/server/scripts/Pet/pet_hunter.cpp
@@ -42,13 +42,22 @@ class npc_pet_hunter_snake_trap : public CreatureScript
 
         struct npc_pet_hunter_snake_trapAI : public ScriptedAI
         {
-            npc_pet_hunter_snake_trapAI(Creature* creature) : ScriptedAI(creature) { }
+            npc_pet_hunter_snake_trapAI(Creature* creature) : ScriptedAI(creature)
+            {
+                Initialize();
+            }
+
+            void Initialize()
+            {
+                _spellTimer = 0;
+                _isViper = false;
+            }
 
             void EnterCombat(Unit* /*who*/) override { }
 
             void Reset() override
             {
-                _spellTimer = 0;
+                Initialize();
 
                 CreatureTemplate const* Info = me->GetCreatureTemplate();
 
diff --git a/src/server/scripts/World/boss_emerald_dragons.cpp b/src/server/scripts/World/boss_emerald_dragons.cpp
index 950b4cd10e9..23e373312cb 100644
--- a/src/server/scripts/World/boss_emerald_dragons.cpp
+++ b/src/server/scripts/World/boss_emerald_dragons.cpp
@@ -170,13 +170,19 @@ class npc_dream_fog : public CreatureScript
         {
             npc_dream_fogAI(Creature* creature) : ScriptedAI(creature)
             {
+                Initialize();
             }
 
-            void Reset() override
+            void Initialize()
             {
                 _roamTimer = 0;
             }
 
+            void Reset() override
+            {
+                Initialize();
+            }
+
             void UpdateAI(uint32 diff) override
             {
                 if (!UpdateVictim())
@@ -247,11 +253,17 @@ class boss_ysondre : public CreatureScript
         {
             boss_ysondreAI(Creature* creature) : emerald_dragonAI(creature)
             {
+                Initialize();
             }
 
-            void Reset() override
+            void Initialize()
             {
                 _stage = 1;
+            }
+
+            void Reset() override
+            {
+                Initialize();
                 emerald_dragonAI::Reset();
                 events.ScheduleEvent(EVENT_LIGHTNING_WAVE, 12000);
             }
@@ -335,11 +347,17 @@ class boss_lethon : public CreatureScript
         {
             boss_lethonAI(Creature* creature) : emerald_dragonAI(creature)
             {
+                Initialize();
             }
 
-            void Reset() override
+            void Initialize()
             {
                 _stage = 1;
+            }
+
+            void Reset() override
+            {
+                Initialize();
                 emerald_dragonAI::Reset();
                 events.ScheduleEvent(EVENT_SHADOW_BOLT_WHIRL, 10000);
             }
@@ -457,11 +475,17 @@ class boss_emeriss : public CreatureScript
         {
             boss_emerissAI(Creature* creature) : emerald_dragonAI(creature)
             {
+                Initialize();
             }
 
-            void Reset() override
+            void Initialize()
             {
                 _stage = 1;
+            }
+
+            void Reset() override
+            {
+                Initialize();
                 emerald_dragonAI::Reset();
                 events.ScheduleEvent(EVENT_VOLATILE_INFECTION, 12000);
             }
@@ -549,16 +573,22 @@ class boss_taerar : public CreatureScript
         {
             boss_taerarAI(Creature* creature) : emerald_dragonAI(creature)
             {
+                Initialize();
             }
 
-            void Reset() override
+            void Initialize()
             {
-                me->RemoveAurasDueToSpell(SPELL_SHADE);
                 _stage = 1;
-
                 _shades = 0;
                 _banished = false;
                 _banishedTimer = 0;
+            }
+
+            void Reset() override
+            {
+                me->RemoveAurasDueToSpell(SPELL_SHADE);
+                
+                Initialize();
 
                 emerald_dragonAI::Reset();
                 events.ScheduleEvent(EVENT_ARCANE_BLAST, 12000);
diff --git a/src/server/scripts/World/guards.cpp b/src/server/scripts/World/guards.cpp
index a156a41fcef..bd953a285ab 100644
--- a/src/server/scripts/World/guards.cpp
+++ b/src/server/scripts/World/guards.cpp
@@ -54,14 +54,22 @@ public:
 
     struct guard_genericAI : public GuardAI
     {
-        guard_genericAI(Creature* creature) : GuardAI(creature) { }
+        guard_genericAI(Creature* creature) : GuardAI(creature)
+        {
+            Initialize();
+        }
 
-        void Reset() override
+        void Initialize()
         {
             globalCooldown = 0;
             buffTimer = 0;
         }
 
+        void Reset() override
+        {
+            Initialize();
+        }
+
         void EnterCombat(Unit* who) override
         {
             if (me->GetEntry() == NPC_CENARION_HOLD_INFANTRY)
@@ -263,9 +271,12 @@ public:
 
     struct guard_shattrath_scryerAI : public GuardAI
     {
-        guard_shattrath_scryerAI(Creature* creature) : GuardAI(creature) { }
+        guard_shattrath_scryerAI(Creature* creature) : GuardAI(creature)
+        {
+            Initialize();
+        }
 
-        void Reset() override
+        void Initialize()
         {
             banishTimer = 5000;
             exileTimer = 8500;
@@ -273,6 +284,11 @@ public:
             canTeleport = false;
         }
 
+        void Reset() override
+        {
+            Initialize();
+        }
+
         void UpdateAI(uint32 diff) override
         {
             if (!UpdateVictim())
@@ -328,9 +344,12 @@ public:
 
     struct guard_shattrath_aldorAI : public GuardAI
     {
-        guard_shattrath_aldorAI(Creature* creature) : GuardAI(creature) { }
+        guard_shattrath_aldorAI(Creature* creature) : GuardAI(creature)
+        {
+            Initialize();
+        }
 
-        void Reset() override
+        void Initialize()
         {
             banishTimer = 5000;
             exileTimer = 8500;
@@ -338,6 +357,11 @@ public:
             canTeleport = false;
         }
 
+        void Reset() override
+        {
+            Initialize();
+        }
+
         void UpdateAI(uint32 diff) override
         {
             if (!UpdateVictim())
diff --git a/src/server/scripts/World/mob_generic_creature.cpp b/src/server/scripts/World/mob_generic_creature.cpp
index a27a78a5338..eb6fbea170e 100644
--- a/src/server/scripts/World/mob_generic_creature.cpp
+++ b/src/server/scripts/World/mob_generic_creature.cpp
@@ -36,7 +36,17 @@ public:
 
     struct generic_creatureAI : public ScriptedAI
     {
-        generic_creatureAI(Creature* creature) : ScriptedAI(creature) { }
+        generic_creatureAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            GlobalCooldown = 0;
+            BuffTimer = 0;          //Rebuff as soon as we can
+            IsSelfRooted = false;
+        }
 
         uint32 GlobalCooldown;      //This variable acts like the global cooldown that players have (1.5 seconds)
         uint32 BuffTimer;           //This variable keeps track of buffs
@@ -44,9 +54,7 @@ public:
 
         void Reset() override
         {
-            GlobalCooldown = 0;
-            BuffTimer = 0;          //Rebuff as soon as we can
-            IsSelfRooted = false;
+            Initialize();
         }
 
         void EnterCombat(Unit* who) override
diff --git a/src/server/scripts/World/npcs_special.cpp b/src/server/scripts/World/npcs_special.cpp
index e8a4a78e1bb..944ebe27b7b 100644
--- a/src/server/scripts/World/npcs_special.cpp
+++ b/src/server/scripts/World/npcs_special.cpp
@@ -329,13 +329,21 @@ public:
 
     struct npc_chicken_cluckAI : public ScriptedAI
     {
-        npc_chicken_cluckAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_chicken_cluckAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            ResetFlagTimer = 120000;
+        }
 
         uint32 ResetFlagTimer;
 
         void Reset() override
         {
-            ResetFlagTimer = 120000;
+            Initialize();
             me->setFaction(FACTION_CHICKEN);
             me->RemoveFlag(UNIT_NPC_FLAGS, UNIT_NPC_FLAG_QUESTGIVER);
         }
@@ -424,15 +432,23 @@ public:
 
     struct npc_dancing_flamesAI : public ScriptedAI
     {
-        npc_dancing_flamesAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_dancing_flamesAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            Active = true;
+            CanIteract = 3500;
+        }
 
         bool Active;
         uint32 CanIteract;
 
         void Reset() override
         {
-            Active = true;
-            CanIteract = 3500;
+            Initialize();
             DoCast(me, SPELL_BRAZIER, true);
             DoCast(me, SPELL_FIERY_AURA, false);
             float x, y, z;
@@ -575,7 +591,25 @@ public:
 
     struct npc_doctorAI : public ScriptedAI
     {
-        npc_doctorAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_doctorAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            PlayerGUID = 0;
+
+            SummonPatientTimer = 10000;
+            SummonPatientCount = 0;
+            PatientDiedCount = 0;
+            PatientSavedCount = 0;
+
+            Patients.clear();
+            Coordinates.clear();
+
+            Event = false;
+        }
 
         uint64 PlayerGUID;
 
@@ -591,18 +625,7 @@ public:
 
         void Reset() override
         {
-            PlayerGUID = 0;
-
-            SummonPatientTimer = 10000;
-            SummonPatientCount = 0;
-            PatientDiedCount = 0;
-            PatientSavedCount = 0;
-
-            Patients.clear();
-            Coordinates.clear();
-
-            Event = false;
-
+            Initialize();
             me->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
         }
 
@@ -720,15 +743,23 @@ public:
 
     struct npc_injured_patientAI : public ScriptedAI
     {
-        npc_injured_patientAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_injured_patientAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            DoctorGUID = 0;
+            Coord = NULL;
+        }
 
         uint64 DoctorGUID;
         Location* Coord;
 
         void Reset() override
         {
-            DoctorGUID = 0;
-            Coord = NULL;
+            Initialize();
 
             //no select
             me->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
@@ -1449,14 +1480,20 @@ public:
     {
         npc_tonk_mineAI(Creature* creature) : ScriptedAI(creature)
         {
+            Initialize();
             me->SetReactState(REACT_PASSIVE);
         }
 
+        void Initialize()
+        {
+            ExplosionTimer = 3000;
+        }
+
         uint32 ExplosionTimer;
 
         void Reset() override
         {
-            ExplosionTimer = 3000;
+            Initialize();
         }
 
         void EnterCombat(Unit* /*who*/) override { }
@@ -1651,13 +1688,21 @@ class npc_wormhole : public CreatureScript
 
         struct npc_wormholeAI : public PassiveAI
         {
-            npc_wormholeAI(Creature* creature) : PassiveAI(creature) { }
+            npc_wormholeAI(Creature* creature) : PassiveAI(creature)
+            {
+                Initialize();
+            }
 
-            void InitializeAI() override
+            void Initialize()
             {
                 _showUnderground = urand(0, 100) == 0; // Guessed value, it is really rare though
             }
 
+            void InitializeAI() override
+            {
+                Initialize();
+            }
+
             uint32 GetData(uint32 type) const override
             {
                 return (type == DATA_SHOW_UNDERGROUND && _showUnderground) ? 1 : 0;
@@ -2305,7 +2350,19 @@ public:
 
     struct npc_spring_rabbitAI : public ScriptedAI
     {
-        npc_spring_rabbitAI(Creature* creature) : ScriptedAI(creature) { }
+        npc_spring_rabbitAI(Creature* creature) : ScriptedAI(creature)
+        {
+            Initialize();
+        }
+
+        void Initialize()
+        {
+            inLove = false;
+            rabbitGUID = 0;
+            jumpTimer = urand(5000, 10000);
+            bunnyTimer = urand(10000, 20000);
+            searchTimer = urand(5000, 10000);
+        }
 
         bool inLove;
         uint32 jumpTimer;
@@ -2315,11 +2372,7 @@ public:
 
         void Reset() override
         {
-            inLove = false;
-            rabbitGUID = 0;
-            jumpTimer = urand(5000, 10000);
-            bunnyTimer = urand(10000, 20000);
-            searchTimer = urand(5000, 10000);
+            Initialize();
             if (Unit* owner = me->GetOwner())
                 me->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);
         }
diff --git a/src/tools/vmap4_extractor/model.cpp b/src/tools/vmap4_extractor/model.cpp
index c527ec32ddb..519f59cb086 100644
--- a/src/tools/vmap4_extractor/model.cpp
+++ b/src/tools/vmap4_extractor/model.cpp
@@ -143,6 +143,7 @@ Vec3D fixCoordSystem2(Vec3D v)
 }
 
 ModelInstance::ModelInstance(MPQFile& f, char const* ModelInstName, uint32 mapID, uint32 tileX, uint32 tileY, FILE *pDirfile)
+    : scale(0), flags(0)
 {
     float ff[3];
     f.read(&id, 4);