diff --git a/src/Debug/Attributes/DebugColorAttribute.cs b/src/Debug/Attributes/DebugColorAttribute.cs
index 5ec68dd..fda3aa5 100644
--- a/src/Debug/Attributes/DebugColorAttribute.cs
+++ b/src/Debug/Attributes/DebugColorAttribute.cs
@@ -61,7 +61,6 @@ namespace DCFApixels.DragonECS
         /// <summary> color code Black. RGB is (0, 0, 0)</summary>
         public const int Black = 0;
 
-
         [FieldOffset(0)] public readonly int colorCode;
         [FieldOffset(3)] public readonly byte r;
         [FieldOffset(2)] public readonly byte g;
@@ -99,6 +98,5 @@ namespace DCFApixels.DragonECS
         {
             return new DebugColor((byte)(a.r / b), (byte)(a.g / b), (byte)(a.b / b));
         }
-        //public static explicit operator DebugColor(int colorCode) => new DebugColor(colorCode);
     }
 }
\ No newline at end of file
diff --git a/src/Pools/EcsHybridPool.cs b/src/Pools/EcsHybridPool.cs
new file mode 100644
index 0000000..2653295
--- /dev/null
+++ b/src/Pools/EcsHybridPool.cs
@@ -0,0 +1,223 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+
+namespace DCFApixels.DragonECS
+{
+    /// <summary>Pool for IEcsComponent components</summary>
+    public sealed class EcsHybridPool<T> : IEcsPoolImplementation<T>, IEcsHybridPool<T>, IEnumerable<T> //IEnumerable<T> - IntelliSense hack
+        where T : IEcsHybridComponent
+    {
+        private EcsWorld _source;
+        private int _componentID;
+
+        private int[] _mapping;// index = entityID / value = itemIndex;/ value = 0 = no entityID
+        private T[] _items; //dense
+        private int _itemsCount;
+        private int[] _recycledItems;
+        private int _recycledItemsCount;
+
+        private IEcsComponentReset<T> _componentResetHandler = EcsComponentResetHandler<T>.instance;
+        private IEcsComponentCopy<T> _componentCopyHandler = EcsComponentCopyHandler<T>.instance;
+
+        private List<IEcsPoolEventListener> _listeners = new List<IEcsPoolEventListener>();
+
+        #region Properites
+        public int Count => _itemsCount;
+        public int Capacity => _items.Length;
+        public int ComponentID => _componentID;
+        public Type ComponentType => typeof(T);
+        public EcsWorld World => _source;
+        #endregion
+
+        #region Init
+        void IEcsPoolImplementation.OnInit(EcsWorld world, int componentID)
+        {
+            _source = world;
+            _componentID = componentID;
+
+            const int capacity = 512;
+
+            _mapping = new int[world.Capacity];
+            _recycledItems = new int[128];
+            _recycledItemsCount = 0;
+            _items = new T[capacity];
+            _itemsCount = 0;
+        }
+        #endregion
+
+        #region Methods
+        public void Add(int entityID, T component)
+        {
+            ref int itemIndex = ref _mapping[entityID];
+#if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
+            if (itemIndex > 0) EcsPoolThrowHalper.ThrowAlreadyHasComponent<T>(entityID);
+#endif
+            if (_recycledItemsCount > 0)
+            {
+                itemIndex = _recycledItems[--_recycledItemsCount];
+                _itemsCount++;
+            }
+            else
+            {
+                itemIndex = ++_itemsCount;
+                if (itemIndex >= _items.Length)
+                    Array.Resize(ref _items, _items.Length << 1);
+            }
+            this.IncrementEntityComponentCount(entityID);
+            _listeners.InvokeOnAdd(entityID);
+            _items[itemIndex] = component;
+        }
+        public void Set(int entityID, T component)
+        {
+            ref int itemIndex = ref _mapping[entityID];
+            if(itemIndex <= 0)
+            {//null
+                if (_recycledItemsCount > 0)
+                {
+                    itemIndex = _recycledItems[--_recycledItemsCount];
+                    _itemsCount++;
+                }
+                else
+                {
+                    itemIndex = ++_itemsCount;
+                    if (itemIndex >= _items.Length)
+                        Array.Resize(ref _items, _items.Length << 1);
+                }
+                this.IncrementEntityComponentCount(entityID);
+            }
+            else
+            {//not null
+                _listeners.InvokeOnDel(entityID);
+                if (_items[itemIndex] is IDisposable disposable)
+                    disposable.Dispose();
+            }
+            _listeners.InvokeOnAdd(entityID);
+            _items[itemIndex] = component;
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public T Get(int entityID)
+        {
+#if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
+            if (!Has(entityID)) EcsPoolThrowHalper.ThrowNotHaveComponent<T>(entityID);
+#endif
+            _listeners.InvokeOnGet(entityID);
+            return _items[_mapping[entityID]];
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public ref readonly T Read(int entityID)
+        {
+#if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
+            if (!Has(entityID)) EcsPoolThrowHalper.ThrowNotHaveComponent<T>(entityID);
+#endif
+            return ref _items[_mapping[entityID]];
+        }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool Has(int entityID)
+        {
+            return _mapping[entityID] > 0;
+        }
+        public void Del(int entityID)
+        {
+#if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
+            if (!Has(entityID)) EcsPoolThrowHalper.ThrowNotHaveComponent<T>(entityID);
+#endif
+            ref int itemIndex = ref _mapping[entityID];
+            T component = _items[itemIndex];
+            if (component is IDisposable disposable)
+                disposable.Dispose();
+            if (_recycledItemsCount >= _recycledItems.Length)
+                Array.Resize(ref _recycledItems, _recycledItems.Length << 1);
+            _recycledItems[_recycledItemsCount++] = itemIndex;
+            _mapping[entityID] = 0;
+            _itemsCount--;
+            this.DecrementEntityComponentCount(entityID);
+            _listeners.InvokeOnDel(entityID);
+        }
+        public void TryDel(int entityID)
+        {
+            if (Has(entityID)) Del(entityID);
+        }
+        public void Copy(int fromEntityID, int toEntityID)
+        {
+#if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
+            if (!Has(fromEntityID)) EcsPoolThrowHalper.ThrowNotHaveComponent<T>(fromEntityID);
+#endif
+            Set(toEntityID, Get(fromEntityID));
+        }
+        public void Copy(int fromEntityID, EcsWorld toWorld, int toEntityID)
+        {
+#if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
+            if (!Has(fromEntityID)) EcsPoolThrowHalper.ThrowNotHaveComponent<T>(fromEntityID);
+#endif
+            toWorld.GetPool<T>().Set(toEntityID, Get(fromEntityID));
+        }
+        #endregion
+
+        #region Callbacks
+        void IEcsPoolImplementation.OnWorldResize(int newSize)
+        {
+            Array.Resize(ref _mapping, newSize);
+        }
+        void IEcsPoolImplementation.OnWorldDestroy() { }
+        void IEcsPoolImplementation.OnReleaseDelEntityBuffer(ReadOnlySpan<int> buffer)
+        {
+            foreach (var entityID in buffer)
+                TryDel(entityID);
+        }
+        #endregion
+
+        #region Other
+        void IEcsPool.AddRaw(int entityID, object dataRaw) => Add(entityID, (T)dataRaw);
+        object IEcsPool.GetRaw(int entityID) => Read(entityID);
+        void IEcsPool.SetRaw(int entityID, object dataRaw) => Set(entityID, (T)dataRaw);
+        #endregion
+
+        #region Listeners
+        public void AddListener(IEcsPoolEventListener listener)
+        {
+            if (listener == null) { throw new ArgumentNullException("listener is null"); }
+            _listeners.Add(listener);
+        }
+        public void RemoveListener(IEcsPoolEventListener listener)
+        {
+            if (listener == null) { throw new ArgumentNullException("listener is null"); }
+            _listeners.Remove(listener);
+        }
+        #endregion
+
+        #region IEnumerator - IntelliSense hack
+        IEnumerator<T> IEnumerable<T>.GetEnumerator() => throw new NotImplementedException();
+        IEnumerator IEnumerable.GetEnumerator() => throw new NotImplementedException();
+        #endregion
+    }
+    /// <summary>Hybrid component</summary>
+    public interface IEcsHybridComponent
+    {
+        bool IsAlive { get; }
+        entlong Entity { set; }
+        void OnAddToPool();
+        void OnDelFromPool();
+    }
+    public static class EcsHybridPoolExt
+    {
+        public static EcsHybridPool<T> GetPool<T>(this EcsWorld self) where T : IEcsHybridComponent
+        {
+            return self.GetPool<EcsHybridPool<T>>();
+        }
+
+        public static EcsHybridPool<T> Include<T>(this EcsAspectBuilderBase self) where T : IEcsHybridComponent
+        {
+            return self.Include<EcsHybridPool<T>>();
+        }
+        public static EcsHybridPool<T> Exclude<T>(this EcsAspectBuilderBase self) where T : IEcsHybridComponent
+        {
+            return self.Exclude<EcsHybridPool<T>>();
+        }
+        public static EcsHybridPool<T> Optional<T>(this EcsAspectBuilderBase self) where T : IEcsHybridComponent
+        {
+            return self.Optional<EcsHybridPool<T>>();
+        }
+    }
+}
diff --git a/src/Pools/EcsPoolBase.cs b/src/Pools/EcsPoolBase.cs
index 459c01f..bcd8b90 100644
--- a/src/Pools/EcsPoolBase.cs
+++ b/src/Pools/EcsPoolBase.cs
@@ -41,6 +41,11 @@ namespace DCFApixels.DragonECS
         T Add(int entityID);
         T Get(int entityID);
     }
+    public interface IEcsHybridPool<T> : IEcsPool
+    {
+        void Add(int entityID, T component);
+        T Get(int entityID);
+    }
     /// <summary>Only used to implement a custom pool. In other contexts use IEcsPool or IEcsPool<T>.</summary>
     public interface IEcsPoolImplementation : IEcsPool
     {