| 角色 | 饰演者介绍 |
| 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 |
