diff --git a/flaschengeist/controller/userController.py b/flaschengeist/controller/userController.py
index 059edc2..c1de6d8 100644
--- a/flaschengeist/controller/userController.py
+++ b/flaschengeist/controller/userController.py
@@ -91,12 +91,26 @@ def update_user(user):
     db.session.commit()
 
 
-def set_roles(user: User, roles: list[str]):
+def set_roles(user: User, roles: list[str], create=False):
+    """Set roles of user
+
+    Args:
+        user: User to set roles of
+        roles: List of role names
+        create: If set to true, create not existing roles
+    Raises:
+        BadRequest if invalid arguments given or not all roles found while `create` is set to false 
+    """
+    from roleController import create_role
+
     if not isinstance(roles, list) and any([not isinstance(r, str) for r in roles]):
         raise BadRequest("Invalid role name")
     fetched = Role.query.filter(Role.name.in_(roles)).all()
     if len(fetched) < len(roles):
-        raise BadRequest("Invalid role name, role not found")
+        if not create:
+            raise BadRequest("Invalid role name, role not found")
+        # Create all new roles
+        fetched += [create_role(role_name) for role_name in roles if not any([role_name == r.name for r in fetched])]
     user.roles_ = fetched