John BluthalCommander Wilbur Zero (voice) Sylvia AndersonDoctor Venus (voice) / Writer Paul MaxwellColonel Steve Zodiac (voice) Gerry AndersonRobert the Robot (voice) (uncredited) / Director / Writer / Producer David GrahamLieutenant Ninety (voice) Gerry AndersonRobert the Robot (voice) (uncredited) / Director / Writer / Producer Sylvia AndersonDoctor Venus (voice) / Writer Reg HillAssociate Producer Don SpencerTheme Song Performance Derek MeddingsVisual Effects Director 
