diff --git a/Sources/DataManagers/ChampChanger.cs b/Sources/DataManagers/ChampChanger.cs
index 916c90f..6f9d3f4 100644
--- a/Sources/DataManagers/ChampChanger.cs
+++ b/Sources/DataManagers/ChampChanger.cs
@@ -8,16 +8,16 @@ namespace DataManagers
 	{
         public static Champion ToPoco(this ChampionEntity champion)
         {
-            return new Champion(name: champion.Name, champClass: champion.ChampClass, icon: champion.Icon, bio: champion.Bio);
+            return new Champion(id: champion.Id, name: champion.Name, champClass: champion.ChampClass, icon: champion.Icon, bio: champion.Bio);
         }
 
         public static ChampionEntity ToEntity(this Champion champion) => new ChampionEntity
         {
+            Id = champion.Id,
             Name = champion.Name,
             Bio = champion.Bio,
             Icon = champion.Icon,
             ChampClass = champion.Class,
-            //Characteristics = champion.Characteristics.Select(dict => dict).ToDictionary(pair => pair.Key, pair => pair.Value)
         };
 
         public static IEnumerable<Champion> ToPocos(this IEnumerable<ChampionEntity> champs)
diff --git a/Sources/EFLib/oiseaux.db-shm b/Sources/EFLib/oiseaux.db-shm
new file mode 100644
index 0000000..fe9ac28
Binary files /dev/null and b/Sources/EFLib/oiseaux.db-shm differ
diff --git a/Sources/EFLib/oiseaux.db-wal b/Sources/EFLib/oiseaux.db-wal
new file mode 100644
index 0000000..e69de29
diff --git a/Sources/Model/Champion.cs b/Sources/Model/Champion.cs
index 3a50658..7fb808c 100644
--- a/Sources/Model/Champion.cs
+++ b/Sources/Model/Champion.cs
@@ -6,6 +6,17 @@ using System.Text;
 namespace Model;
 public class Champion : IEquatable<Champion>
 {
+
+    public int Id
+    {
+        get => id;
+        private init
+        {
+            id = value;
+        }
+    }
+    private readonly int id;
+
     public string Name
     {
         get => name;
@@ -42,6 +53,18 @@ public class Champion : IEquatable<Champion>
 
     public LargeImage Image { get; set; }
 
+    public Champion(int id, string name, ChampionClass champClass = ChampionClass.Unknown, string icon = "", string image = "", string bio = "")
+    {
+        Id = id;
+        Name = name;
+        Class = champClass;
+        Icon = icon;
+        Image = new LargeImage(image);
+        Bio = bio;
+        Characteristics = new ReadOnlyDictionary<string, int>(characteristics);
+        Skins = new ReadOnlyCollection<Skin>(skins);
+    }
+
     public Champion(string name, ChampionClass champClass = ChampionClass.Unknown, string icon = "", string image = "", string bio = "")
     {
         Name = name;