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