He is the holder a unique science fiction trifecta in that he is the only actor to appear in the "Doctor Who", "Star Wars" and "Star Trek" franchises. He played Mr Sin in the 1977 …

He is the holder a unique science fiction trifecta in that he is the only actor to appear in the "Doctor Who", "Star Wars" and "Star Trek" franchises. He played Mr Sin in the 1977 Doctor Who serial "The Talons of Weng-Chiang", Droopy McCool in Star Wars: Episode VI - Return of the Jedi and Keenser in Star Trek.