| 角色 | 饰演者介绍 |
| Chris Knight | 方·基默 |
| Mitch Taylor (as Gabe Jarret) | Gabriel Jarret |
| Jordan Cochran | Michelle Meyrink |
| Prof. Jerry Hathaway | 威廉·阿瑟东 |
| Lazlo Hollyfeld (as Jonathan Gries) | 强·格瑞斯 |
| Sherry Nugil | Patti D'Arbanville |
| Shuttle Pilot | 斯泰西·佩拉塔 |
| Laser Ray Victim | Daniel Ades |
| Bartender | Andres Aybar |
| Maj. Carnagle | Louis Giambalvo |
| David Decker | 艾德·劳特 |
| Air Force General | Charles Shull |
| George | Beau Billingslea |
| Larry | Charles Parks |
| Boy at Science Fair | Sean Frye |
| Girl at Science Fair | JoAnn Willette |
| Old Lady | Ina Gould |
| Student at Science Fair | Nadine Vix |
| Mr. Taylor | Paul Tulley |
| Mrs. Taylor | 乔安妮·巴伦 |
| Darlington Recruiter | Chip Johnson |
| Dr. Dodd | Monte Landis |
| Mrs. Meredith | Sandy Martin |
| Dr. Meredith | 赛文·达尔登 |
| Cornell (as Randolph Dreyfuss) | Randy Lowell |
| Kent Torokvei | 罗伯特·普雷斯科特 |
| Carter | John Shepherd Reid |
| Bodie (as Tom Swerdlow) | Tommy Swerdlow |
| 'Ick' Ikagami | Mark Kamiyama |
| Math Professor | Martin Gundersen |
| Carpet Man | Brett Miller |
| Milton | 迪安·德夫林 |
| Fenton | Yuji Okumoto |
| Chris' Girl at Party | Lynda Wiesmeier |
| Ick's Girl at Party | Penny Baker |
