He also played the main villain in the movie Galaxy Quest and did the main voice work for the video games Mass Effect 2 and 3. He was in Buffy the Vampire Slayer and Torchwood among many other roles.
Other Babylon 5 Actors who have died
On radio it was stated that seven Babylon 5 actors have died. I know of six including Robin Sachs.
Andreas Katsulas (G'Kar)
Richard Biggs (Dr. Stephen Franklin)
Michael O'Hare (Jeffrey Sinclair - Valen)
Jeff Conaway who played Zach (also known for being in the movie Grease and the TV show Taxi)
Tim Choate (Zathras)
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