 | Matthew Lawrence als Frank Stein |
 | Justin Walker als Lance Kipple |
 | Ryan Reynolds als Karl O'Reilly |
 | Christine Lakin als Macy |
| Christian Payne als Tuttle |
 | Shelley Duvall als Mrs. Stein |
 | Richard Moll als Mr. O'Reilly |
 | Charles Fleischer als Mr. Stockton |
 | Kenn Michael als Jordy |
 | Bianca Lawson als Darien Stompanato |
 | Judge Reinhold als Mr. Stein |
 | Nicole Nieth als Andrea Shrelonzky |
| Bradley Jay Lesley als Arnie |
 | Eric Siegel als Officer Scott |
 | Richard Speight Jr. als Comic Book Salesman |
| Russ Brandt | Director of Photography |
| Daniel H. Holland | Editor |
| Mark R. Harris | Producer |
| Dave Payne | Screenplay |
| Stan Cole | Editor |
| Roger Neill | Music |
| Meredith McCarthy | Set Decoration |
| Mitch Marcus | Director |
| Ryeland Allison | Music |
| Donald Paul Pemrick | Casting |
| Dean E. Fronk | Casting |
| Paul Colichman | Producer |
| Wendy Range | Costume Design |
| Sam Irvin | Co-Executive Producer |
| Stephen P. Jarchow | Executive Producer |
| Scott Rusch | Foley Mixer |
| Greg Patterson | Grip |
| Emily Kaye | Music Supervisor |
| Alexandra Patsavas | Music Supervisor |
| Noel McCarthy | Art Direction |
| Gary J. Perticone | Key Hair Stylist |
| Lesley Pike | Makeup Artist |
| Doug Reed | Foley Artist |
| Bob Huynh | Grip |
| Lucy Nicholson | Electrician |
| John Blush | Director |
| Peggy McAffee | Sound Effects Editor |
| Corey Roberts | Special Effects Assistant |
| Stephen Krause | Scoring Mixer |
| Israel Gonzales | Stand In |
| Hank Grover | Line Producer |
| Justin Landen | Stunts |
| Harold Garon | Electrician |
| Richard Ralston | Best Boy Electric |
| Paul Yen | Electrician |
| Sarah Pearce | Stand In |
| Mark Headley | Production Manager |
| Mikael Sandgren | Dialogue Editor |
| Joey Gardner | Stunts |
| Aaron M. Lewis | Grip |
| Kenji Luster | Steadicam Operator |
| Chris Waisanen | Dolly Grip |
| Gianni Thomas | Makeup Artist |
| Mike Chisman | Special Effects Assistant |
| Linda Chapin Jones | Script Supervisor |
| Jeffrey Schenck | Co-Producer |
| Mary Kilmek | Makeup Artist |
| Florence Bonneville | Sound Recordist |
| Leslie McAlpine | Key Grip |
| Maxine Brooks | Studio Teacher |
| Peggy McAffee | Sound Supervisor |
| Richard Cheminski | Grip |
| Stefan Tarzan | First Assistant Camera |
| Beau Rogers | Executive Producer |
| Marcelle Estelman | Makeup Artist |
| Dean Sadler | Hairstylist |
| Sam Cicchirillo | Makeup Effects Designer |
| Fedor Leonenko | Key Makeup Artist |
| Carlos Isais | Sound Recordist |
| George Phillips | Special Effects Coordinator |
| Nick Plantico | Special Effects Assistant |
| Dino A. Moriana | Music Editor |
| John Salcedo | Sound Mixer |
| Troy Wilcox | Boom Operator |
| Davd Sirianni | Grip |
| Neil Toussaint | First Assistant Camera |
| Christina Thomas | Electrician |
| Cole S. McKay | Stunt Coordinator |
| Bobby Foster | Key Grip |
| Bobby Foster | Dolly Grip |
| John Steven Agoglia | Location Manager |
| Evan Peller | Assistant Location Manager |
| David Forrest | Executive Producer |
| Rick Owens | Foley Artist |
| James Ridgley | Production Sound Mixer |
| Dale Newkirk | Pyrotechnician |
| Greg Jarrett | Best Boy Electric |
| Sean P. Donahue | Stunts |
| Rob Richardson | Best Boy Grip |
| Melanie Weiner | Co-Producer |
| Caryn Marcus | Production Design |
| William Evans | Gaffer |
| Kristin Windell | Assistant Editor |
| Sandy Williams | Key Makeup Artist |
