Gary Chalk is an English-Canadian actor, who perhaps is best known for his main role as Optimus Primal in the CGI animated series Beast Wars (co-starring David Kaye and Scott McNeil). He's also had parts in Stargate: SG-1, The Client List, and Angel and the Badman.

Live roles

TV films/direct-to-video films

Scooby-Doo! The Mystery Begins

Main article(s): Scooby-Doo! The Mystery Begins
Vice Principal Grimes
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