Special Guest Stars Jack Palance as Kaleel Buster Crabbe as Brigadier Gordon Guest Stars Roddy McDowall as Governor Saroyan Michael Mullins as Regis Saroyan Karen Carlson as Stella Warden Brianne Leary as Ryma David Groh as Major Duke Danton Macdonald Carey as Dr. Mallory Co Starring Mel Blanc voices Twiki the Robot Felix Silla as Twiki the Robot Robert Dowdell as Galen Michael Masters as Worker Don Maxwell as Guard Borah Silver as Husband June Whitley Taylor as Woman Sheila Wills as Major Fields Diane Markoff as Female Pilot Don Marshall as Julio Uncredited Eric Server voices Dr. Theopolis
