| Name | Character | Episodes |
|---|---|---|
| Clint Howard | Mimmer | 6 |
| Linda Hunt | Cmdr. Chennault | 6 |
| Marjorie Monaghan | JoJo | 6 |
| Jack McGee | Doc | 6 |
| Cary-Hiroyuki Tagawa | Zylyn | 6 |
| Gottfried John | Erich Weiss | 6 |
| Danny Quinn | Daniel Kincaid | 6 |
| Salli Richardson-Whitfield | 1 | |
| Pat Morita | Nazzer | 1 |
| Wings Hauser | Ex-Ranger Decker | 1 |
| Amy Steel | Sarah Boon | 1 |
| Art LaFleur | Decker henchman | 1 |