Bob May -- who played The Robot in "Lost in Space" -- died early this morning at the Lancaster Community Hospital in California.
A rep for Bob said he was taken to the hospital on Friday, and died at around 3 AM this morning of congestive heart failure.
Back in November, Bob had a stroke soon after a fire consumed his California home.
Patricia Arthur, May's long time friend and agent, "asks all his fans to take a moment of silence as one of Science Fiction's greatest has passed. Family and friends will miss him dearly."
Bob was 69.