quite a bit, too much to summarize here

WindowsFormsApplication2/Discord/ImageManager.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Runtime.InteropServices;
+#if UNITY_EDITOR || UNITY_STANDALONE
+using UnityEngine;
+#endif
+
+namespace Discord
+{
+	public partial struct ImageHandle
+    {
+        static public ImageHandle User(Int64 id)
+        {
+            return User(id, 128);
+        }
+
+        static public ImageHandle User(Int64 id, UInt32 size)
+        {
+            return new ImageHandle
+            {
+                Type = ImageType.User,
+                Id = id,
+                Size = size,
+            };
+        }
+    }
+
+    public partial class ImageManager
+    {
+        public void Fetch(ImageHandle handle, FetchHandler callback)
+        {
+            Fetch(handle, false, callback);
+        }
+
+        public byte[] GetData(ImageHandle handle)
+        {
+            var dimensions = GetDimensions(handle);
+            var data = new byte[dimensions.Width * dimensions.Height * 4];
+            GetData(handle, data);
+            return data;
+        }
+
+#if UNITY_EDITOR || UNITY_STANDALONE
+        public Texture2D GetTexture(ImageHandle handle)
+        {
+            var dimensions = GetDimensions(handle);
+            var texture = new Texture2D((int)dimensions.Width, (int)dimensions.Height, TextureFormat.RGBA32, false, true);
+            texture.LoadRawTextureData(GetData(handle));
+            texture.Apply();
+            return texture;
+        }
+#endif
+    }
+}