Known for his roles as Will Robinson in the series, Lost in Space and as Lennier on the series, Babylon 5.
He earned his first acting role at the young age of 6 on an episode of TV's National Velvet.
He also found success doing voice overs for numerous animated series, including Animaniacs, Scooby Doo, and Ren and Stimpy.
He married Eileen Joy Davis and the couple had two children named Seth and Liliana, who is also an actress.
He appeared in an episode of the drama Series Going My Way starring Gene Kelly.