Denis Lavant
Mr. Oscar/Le Banquier/La Mendiante/L'O.S de la Motion Capture/M. Merde/Le Père/L'Accordéoniste/Le Tueur/Le Tué/Le Mourant/L'Homme au Foyer
Driven around Paris by a loyal driver (Edith Scob), a mysterious man (Denis Lavant) dresses up in costumes and plays a number of strange, semiscripted roles. Wikipedia