Career
Arnaud is best known for his performances as Cesare Borgia in Showtime"s television series The Borgias, as Antonin in the French Canadian movie I Killed My Mother (J"ai tué ma mère), and as Oscar in the new National Broadcasting Company hit series "Blindspot." In Quebec, he is known for his role as Théo in the television series Yamaska. In 2007, Arnaud trained at the Conservatoire d"art dramatique in Montreal. Arnaud dated French Canadian actress Évelyne Brochu.
Brochu stated in a 2014 interview that the two were no longer together.