Guy WilliamsDr. John Robinson June LockhartDr. Maureen Robinson Mark GoddardMajor Don West Marta KristenJudy Robinson Angela CartwrightPenny Robinson Jonathan HarrisDr. Zachary Smith Albert SalmiCaptain Alonzo P. Tucker Michael FoxAlien on Computer Screen (voice) Joe E. TataPurple Robot (voice) Theodore LehmannDisk (voice) Gregory MortonCanto of Quasti (voice) Allan MelvinLittle Joe / Gambling Machine (voice) Tiger Joe MarshElevator Operator Hoke HowellSecurity Guard Sue EnglandSpace Control Officer O-3 (voice) William BramleyMr. Nobody Fred KroneChronos' Alien Assistant Henry JonesJeremiah Smith Torin ThatcherThe Space Trader Michael J. PollardThe Boy Wilbur EvansLighted Head Leader Lamar LundyThe Giant Cyclops Warren OatesJimmy Hapgood Robert EastonNewsman Lacy Lyle WaggonerMechanical Man Daniel J. TravantiSpace Hippie Mercedes McCambridgeSybilla Janos ProhaskaBird Monster James WesterfieldDr. Marvello Reta ShawAunt Clara Simms Woodrow ParfreyCol. Silas Fogey Chuck RobersonAlien Fighter Helen KleebPhone Operator Rachel Frank ParkerSecurity Guard Fred CraneAlpha Control Technician Robert 'Big Buck' MaffeiThe Giant Cyclops Charles DierkopHorned Mutant Walter SandeSheriff George Baxendale June ForayGundemar (voice) Bart La RueAlien Machine (voice) Linda Gaye ScottAien Girl Tom AllenInspector (uncredited) Corinna TsopeiPrincess Reyka Byron MorrowGeneral Squires Miriam SchillerMiss Teutonium James MillhollinWilloughby Ollie O'TooleRobotoid (voice) (uncredited) Hal Jon NormanDog-faced Alien (uncredited) Jack Martin SmithArt Direction Walter M. ScottSet Decoration Robert KinoshitaArt Direction Sven WichmannSet Decoration Frank G. CarsonDirector Of Photography Gene PolitoDirector Of Photography Winton C. HochDirector Of Photography Charles G. ClarkeDirector Of Photography Lionel NewmanMusic Supervisor Don HallSupervising Sound Effects Editor Leonard A. EngelSupervising Music Editor L.B. AbbottVisual Effects Johnny BorgeseSpecial Effects Supervisor Gerald EndlerMechanical Designer Howard LydeckerVisual Effects Anthony WilsonStory Editor 
