Kadro (15)
Sylvia AndersonLady Penelope Creighton-Ward (voice)
Ray BarrettJohn Tracy / The Hood (voice)
Alexander DavionSpace Captain Greg Martin (voice)
Peter DyneleyJeff Tracy (voice)
Christine FinnTin-Tin Kyrano (voice)
David GrahamGordon Tracy / Brains / Aloysius Parker (voice)
Paul MaxwellCaptain Paul Travers (voice)
Neil McCallumDr. Ray Pierce (voice)
Bob MonkhouseSpace Navigator Brad Newman / Swinging Star Compere (voice)
Shane RimmerScott Tracy (voice)
Charles TingwellDr. Tony Grant / Angry Young Man / Public Relations Officer (voice)
Jeremy WilkinVirgil Tracy / Space Exploration Center President (voice)
Matt ZimmermanAlan Tracy / Messenger (voice)F. Vivian DunnHimself (voice)
Cliff RichardCliff Richard Jr. (voice)