Stephen Furst, an alumni of the hit sci-fi series Babylon 5, passed away Friday from complications with diabetes. He was 63.

RELATED: J. Michael Straczynski Planning ‘Babylon 5’ Feature Film

Nathan and Griffith Furst, the actor's two sons, announced their father's passing on his Facebook page (via The Hollywood Reporter), honoring their "brilliant and prolific actor and filmmaker" dad.

"Steve has a long list of earthly accomplishments," they wrote in a post. "He was known to the world as an brilliant and prolific actor and filmmaker, but to his family and many dear friends he was also a beloved husband, father and kind friend whose memory will always be a blessing."

RELATED: Straczynski Swats Down Rumor About Babylon 5 Revival

In addition to playing Vir Cotto on Babylon 5, Furst was known for his role as Flounder in Animal House and Dr. Axelrod on St. Elsewhere. Throughout the 1970s and 80s, Furst appeared on Newhart, CHiPS and The Jeffersons. He starred alongside Michael Keaton, Christopher Lloyd and Peter Boyle in the '80s comedy film The Dream Team.

You can read the full Facebook post from Furst's sons below.

RELATED: ‘Babylon 5’ Star Jerry Doyle Passes Away