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