| 角色 | 饰演者 | 角色介绍 |
| David Scott Freeman | 乔伊·克莱默 | |
| Carolyn McAdams | 莎拉·杰西卡·帕克 | |
| Mr. Howard | 理查德·雷伯蒂 | |
| Trimaxion / Max (voice) (as Paul Mall) | 保罗·雷宾斯 | |
| Helen Freeman | 维罗尼卡·卡维特 | |
| Bill Freeman | 克利夫·德杨 | |
| Jeff Freeman 16 Years | Matt Adler | |
| Dr. Faraday | Howard Hesseman | |
| Troy | Robert Small | |
| Jeff Freeman 8 Years | Albie Whitaker | |
| Dr. Carr | 乔纳森·桑格尔 | |
| Mrs. Howard | Iris Acker | |
| Detective Banks | Raymond Forchion | |
| Woman Officer | Cynthia Caquelin | |
| Night Guard Brayton | Ted Bartsch | |
| Female Technician #1 | Gizelle Elliott | |
| Female Technician #2 | Brigid Cleary | |
| Technician #3 | Michael Strano | |
| Scientist #1 | Parris Buckner | |
| Scientist #2 | Robyn Peterson | |
| Observation Guard | Tony Tracy | |
| NASA Officer | Philip Hoelcher | |
| Hangar Guard #1 | Julio Oscar Mechoso | |
| Hangar Guard #2 | Butch Raymond | |
| Control Room Guard #1 | Bob Strickland | |
| Control Room Guard #2 | Michael Brockman | |
| Radar Technician #1 | Louis Cutolo | |
| Radar Technician #2 | Debbie Casperson | |
| Lieutenant King | Chase Randolph | |
| Agent #1 | John Archie | |
| Big Al Gas Station Attendant | Rusty Pouch | |
| Tourist Man | Robert Goodman | |
| Tourist Boy | Ryan Murray |
