| Andy Kaufman | ValCom 17485 |
| Bernadette Peters | AquaCom 89045 |
| Randy Quaid | Charlie |
| Kenneth McMillan | Max |
| Melanie Mayron | Susan |
| Christopher Guest | Calvin |
| Jack Carter | Catskil voice |
| David LeBell | Forklift Drive Robot |
| Dennis Quaid | Actor |
| Anne Wharton | Guest |
| Karsen Lee Gould | Maid Robot |
| Richard B. Shull | Factory Boss |
| Dick Miller | Watchman |
| Kathleen Freeman | Helicopter Pilot |
| Mary Woronov | Party House Owner |
| Paul Bartel | Guest |
| Barry Diamond | Firing Range Technician |
| Stephanie Faulkner | Firing Range Technician |
| Jeffrey Kramer | Butler Robot |
| Irene Forrest | Party Maid Robot |
| Jerry Garcia | Phil |
Technical Credits
| Allan Arkush | Director |
| James Alexander | Sound/Sound Designer |
| John W. Corso | Production Designer |
| Madeline Ann Graneto | Costumes/Costume Designer |
| Douglas Green | Executive Producer |
| John Hill | Associate Producer,Screenwriter |
| Tina Hirsch | Editor |
| Marc E. Meyer | Set Decoration/Design |
| Michael Phillips | Producer |
| Debby Porter | Stunts |
| Charles Rosher | Cinematographer |
| Theadora Van Runkle | Costumes/Costume Designer |
| John Williams [composer] | Score Composer |
| Stan Winston | Makeup Special Effects |
| Don Zepfel | Asst. Director |