diff --git a/character_builder.py b/character_builder.py
index f8e8dbf..fa06a6f 100644
--- a/character_builder.py
+++ b/character_builder.py
@@ -1,11 +1,18 @@
-from base_mob import BaseMob
+import importlib.util
 import json
 import os
+import sys
+from typing import Callable
+
+from base_mob import BaseMob
 
 
 class CharacterBuilder:
-    @staticmethod
-    def build_character():
+    save_character_impl: Callable[[BaseMob], str]
+    load_character_impl: Callable[[str], None]
+
+    @classmethod
+    def build_character(cls):
         """Demande à l'utilisateur de saisir les attributs du personnage."""
         print("Création d'un nouveau personnage :")
         name = input("Nom du personnage : ")
@@ -16,51 +23,83 @@ class CharacterBuilder:
         mob_type = 0
         return BaseMob(name, max_pv, strength, protection, speed, mob_type)
 
-    @staticmethod
-    def save_character(character):
+    @classmethod
+    def save_character(cls, character: BaseMob) -> None:
         """Enregistre un personnage dans un fichier JSON."""
-        character_data = {
-            "name": character.name,
-            "max_pv": character.max_pv,
-            "current_pv": character.current_pv,
-            "strength": character.strength,
-            "protection": character.protection,
-            "speed": character.speed,
-            "mob_type": character.mob_type
-        }
-        filename = character.name + ".json"
-        with open(filename, "w",encoding='UTF-8') as file:
-            json.dump(character_data, file, indent=4)
+        filename = cls.save_character_impl(character)
         print(f"Personnage enregistré dans {filename}.")
 
-    @staticmethod
-    def load_character(name):
+    @classmethod
+    def load_character(cls, name: str) -> BaseMob | None:
         """Charge un personnage à partir d'un fichier JSON."""
-        filename = name + ".json"
-        if not os.path.exists(filename):
-            print(f"Erreur : Le fichier {filename} n'existe pas.")
-            return None
-
         try:
-            with open(filename, "r",encoding='UTF-8') as file:
-                character_data = json.load(file)
-
-            # Vérification des clés essentielles dans le JSON pour éviter les erreurs
-            required_keys = ["name", "max_pv", "current_pv",
-                             "strength", "protection", "speed", "mob_type"]
-            if not all(key in character_data for key in required_keys):
-                print(f"Erreur : Le fichier {filename} ne contient pas toutes les clés nécessaires.")
-                return None
-
-            # Construction du personnage
-            return BaseMob(
-                name=character_data["name"],
-                max_pv=character_data["max_pv"],
-                strength=character_data["strength"],
-                protection=character_data["protection"],
-                speed=character_data["speed"],
-                mob_type=character_data["mob_type"]
-            )
-        except json.JSONDecodeError:
-            print(f"Erreur : Le fichier {filename} n'est pas un JSON valide.")
+            return cls.load_character_impl(name)
+        except Exception as e:
             return None
+
+
+def save_character(character: BaseMob) -> str:
+    """Enregistre un personnage dans un fichier JSON."""
+    character_data = {
+        "name": character.name,
+        "max_pv": character.max_pv,
+        "current_pv": character.current_pv,
+        "strength": character.strength,
+        "protection": character.protection,
+        "speed": character.speed,
+        "mob_type": character.mob_type
+    }
+    filename = character.name + ".json"
+    with open(filename, "w", encoding='UTF-8') as file:
+        json.dump(character_data, file, indent=4)
+    return filename
+
+
+def load_character(name: str) -> BaseMob | None:
+    """Charge un personnage à partir d'un fichier JSON."""
+    filename = name + ".json"
+    if not os.path.exists(filename):
+        print(f"Erreur : Le fichier {filename} n'existe pas.")
+        return None
+
+    try:
+        with open(filename, "r", encoding='UTF-8') as file:
+            character_data = json.load(file)
+
+        # Vérification des clés essentielles dans le JSON pour éviter les erreurs
+        required_keys = ["name", "max_pv", "current_pv",
+                         "strength", "protection", "speed", "mob_type"]
+        if not all(key in character_data for key in required_keys):
+            print(f"Erreur : Le fichier {filename} ne contient pas toutes les clés nécessaires.")
+            return None
+
+        # Construction du personnage
+        return BaseMob(
+            name=character_data["name"],
+            max_pv=character_data["max_pv"],
+            strength=character_data["strength"],
+            protection=character_data["protection"],
+            speed=character_data["speed"],
+            mob_type=character_data["mob_type"]
+        )
+    except json.JSONDecodeError:
+        print(f"Erreur : Le fichier {filename} n'est pas un JSON valide.")
+        return None
+
+
+pydantic = None
+name = 'pydantic'
+if name in sys.modules:
+    pydantic = sys.modules[name]
+elif (spec := importlib.util.find_spec(name)) is not None:
+    pydantic = importlib.util.module_from_spec(spec)
+    sys.modules[name] = pydantic
+    spec.loader.exec_module(pydantic)
+
+if pydantic and os.environ.get('ELIRON_BUILDER') == 'pydantic':
+    pydantic_character_builder = importlib.import_module('pydantic_character_builder')
+    CharacterBuilder.save_character_impl = pydantic_character_builder.save_character
+    CharacterBuilder.load_character_impl = pydantic_character_builder.load_character
+else:
+    CharacterBuilder.save_character_impl = save_character
+    CharacterBuilder.load_character_impl = load_character