diff --git a/data/sql/updates/pending_db_world/rev_1696120539180026700.sql b/data/sql/updates/pending_db_world/rev_1696120539180026700.sql
new file mode 100644
index 000000000..57a0a63b6
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1696120539180026700.sql
@@ -0,0 +1,2 @@
+--
+UPDATE `creature_template` SET `mechanic_immune_mask`=`mechanic_immune_mask`|33554432 WHERE `entry` = 17535;
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp b/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp
index 1c037f381..94e031126 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/bosses_opera.cpp
@@ -231,20 +231,12 @@ struct boss_dorothee : public ScriptedAI
         me->DespawnOrUnsummon();
     }
 
-    void AttackStart(Unit* who) override
+    void SummonedCreatureDies(Creature* creature, Unit* /*killer*/) override
     {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::AttackStart(who);
-    }
-
-    void MoveInLineOfSight(Unit* who) override
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::MoveInLineOfSight(who);
+        if (creature->GetEntry() == NPC_TITO)
+        {
+            Talk(SAY_DOROTHEE_TITO_DEATH);
+        }
     }
 
     void EnterEvadeMode(EvadeReason reason) override
@@ -288,8 +280,6 @@ struct npc_tito : public ScriptedAI
 
     InstanceScript* instance;
 
-    void Reset() override { }
-
     void JustEngagedWith(Unit* /*who*/) override
     {
         _scheduler.Schedule(10s, [this](TaskContext context)
@@ -299,18 +289,6 @@ struct npc_tito : public ScriptedAI
         });
     }
 
-    void JustDied(Unit* /*killer*/) override
-    {
-        if (Creature* Dorothee = instance->GetCreature(DATA_DOROTHEE))
-        {
-            if (Dorothee->IsAlive())
-            {
-                Talk(SAY_DOROTHEE_TITO_DEATH, Dorothee);
-            }
-        }
-        me->DespawnOrUnsummon();
-    }
-
     void UpdateAI(uint32 diff) override
     {
         if (!UpdateVictim())
@@ -351,17 +329,6 @@ struct boss_roar : public ScriptedAI
         }
     }
 
-    void Reset() override { }
-
-    void MoveInLineOfSight(Unit* who) override
-
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::MoveInLineOfSight(who);
-    }
-
     void EnterEvadeMode(EvadeReason reason) override
     {
         ScriptedAI::EnterEvadeMode(reason);
@@ -373,14 +340,6 @@ struct boss_roar : public ScriptedAI
         }
     }
 
-    void AttackStart(Unit* who) override
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::AttackStart(who);
-    }
-
     void JustEngagedWith(Unit* /*who*/) override
     {
         Talk(SAY_ROAR_AGGRO);
@@ -458,24 +417,6 @@ struct boss_strawman : public ScriptedAI
         }
     }
 
-    void Reset() override { }
-
-    void AttackStart(Unit* who) override
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::AttackStart(who);
-    }
-
-    void MoveInLineOfSight(Unit* who) override
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::MoveInLineOfSight(who);
-    }
-
     void EnterEvadeMode(EvadeReason reason) override
     {
         ScriptedAI::EnterEvadeMode(reason);
@@ -601,22 +542,6 @@ struct boss_tinhead : public ScriptedAI
         me->DespawnOrUnsummon();
     }
 
-    void AttackStart(Unit* who) override
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::AttackStart(who);
-    }
-
-    void MoveInLineOfSight(Unit* who) override
-    {
-        if (me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-            return;
-
-        ScriptedAI::MoveInLineOfSight(who);
-    }
-
     void EnterEvadeMode(EvadeReason reason) override
     {
         ScriptedAI::EnterEvadeMode(reason);