| 角色 | 饰演者 | 角色介绍 |
| Capt. Steve Burton (51 episodes 1968-1970) | Gary Conway | |
| Mark Wilson (51 episodes 1968-1970) | Don Matheson | |
| Barry Lockridge (51 episodes 1968-1970) | Stefan Arngrim | |
| Dan Erickson (51 episodes 1968-1970) | Don Marshall | |
| Valerie Scott (51 episodes 1968-1970) | Deanna Lund | |
| Betty Hamilton (51 episodes 1968-1970) | Heather Young | |
| Alexander B. Fitzhugh (51 episodes 1968-1970) | Kurt Kasznar | |
| Insp. Dobbs Kobick (9 episodes 1969-1970) | Kevin Hagen | |
| SID Man? (5 episodes 1969-1970) | Erik L. Nelson | |
| Cop? (5 episodes 1969-1970) | Steven Marlo | |
| Gateman? (3 episodes 1969) | Michael Quinn | |
| Museum Policeman? (3 episodes 1968-1970) | Ted Jordan | |
| Dr. Brule? (2 episodes 1968-1969) | 保罗·菲克斯 | |
| Inidu? (2 episodes 1969-1970) | 杰克·艾伯森 | |
| Grotius? (2 episodes 1969) | Cliff Osmond | |
| Capt. Ashim? (2 episodes 1969) | 沃伦·斯蒂文斯 | |
| Carlos? (2 episodes 1968-1970) | Joseph Ruskin | |
| Dr. Kraal? (2 episodes 1969) | Leonard Stone | |
| First Giant? (2 episodes 1968-1969) | William Bramley | |
| Giant Guard #1? (2 episodes 1968-1969) | Paul Trinka |
