diff --git a/CreatureMethods.h b/CreatureMethods.h
index b3db467..0774e0a 100644
--- a/CreatureMethods.h
+++ b/CreatureMethods.h
@@ -234,6 +234,20 @@ namespace LuaCreature
         return 1;
     }
 
+    /**
+     * Returns `true` if the [Creature]'s flags_extra includes Dungeon Boss (0x1000000),
+     *   and returns `false` otherwise.
+     *
+     * @return bool isDungeonBoss
+     */
+#if defined(TRINITY) || defined(AZEROTHCORE)
+    int IsDungeonBoss(lua_State* L, Creature* creature)
+    {
+        Eluna::Push(L, creature->IsDungeonBoss());
+        return 1;
+    }
+#endif
+
     /**
      * Returns `true` if the [Creature]'s rank is Boss,
      *   and returns `false` otherwise.
diff --git a/LuaFunctions.cpp b/LuaFunctions.cpp
index d5448c9..04ffa87 100644
--- a/LuaFunctions.cpp
+++ b/LuaFunctions.cpp
@@ -809,6 +809,9 @@ ElunaRegister<Creature> CreatureMethods[] =
     { "SetEquipmentSlots", &LuaCreature::SetEquipmentSlots },
 
     // Boolean
+#if defined(TRINITY) || defined(AZEROTHCORE)
+    { "IsDungeonBoss", &LuaCreature::IsDungeonBoss },
+#endif
     { "IsWorldBoss", &LuaCreature::IsWorldBoss },
     { "IsRacialLeader", &LuaCreature::IsRacialLeader },
     { "IsCivilian", &LuaCreature::IsCivilian },