Antoine's father
I always thought he was the most likeable character of the movie, because although i sympathized with Antoine, i didn't like him too much (a bit foolish and too careless, in my opinion). He was always encouraging his son to be a good person and he had a nice temper (except the scene when he got fed up and hit Antoine at school). I always had the feeling that Antoine's rebellion was a reaction against his mother's behavior, who didn't care much for him and was adulterous/cheater.