He also played Antonin in the popular French Canadian flick J’ai tué ma mère. He played “Théo” in the TV series Yamaska, for which he is well-known in Quebec. His breakout role came in the 2009 Canadian film I Killed My Mother. The film received an eight minute standing ovation at the Cannes Film Festival. Arnaud won a VFCC award for Best Supporting Actor in a Canadian Film for this role as well. He will appear in the films Thursday and Big Sky, which are currently in post-production and set for a 2014 release.