A British born Canadian actor, Chalk began his career as a theatre actor in British Columbia. Later, he became a television and film actor, some of his appearances including Cold Squad and Stargate SG1.
Chalk is also a prolific voice actor, famed for playing Optimus Primal in Beast Wars: Transformers, Metal-Head in G.I. Joe and Luca Brasi in The Godfather: The Game.
