He most recently played Gary Bell, a character with autism, on the Syfy television series Alphas.
With Michael Karnow, Penn is the co-creator of the TV series Alphas on the Syfy network.
He has appeared and/or done voice work on television shows like Stoked, Murdoch Mysteries, Mr Moon, Falling Skies and Alphas, and has appeared in films like the 2008 Canadian drama One Week (directed by Michael McGowan) and the 2011 epic Immortals (alongside Henry Cavill and Mickey Rourke).
Saints had a majority shareholding in bodybuilder Coachmaster and from the late 1950s purchased Albion Aberdonians, Atkinson Alphas and Bedford VAM70s.
The Alphas is a spin-off of the Clique book series by Lisi Harrison.