| Victor Wong | Grandpa |
| Michael Treanor | Rocky |
| Max Elliott Slade | Colt |
| Chad Power | Tum Tum |
| Rand Kingsley | Hugo Snyder |
| Alan McRae | Sam Douglas |
| Margarita Franco | Jessica Douglas |
| Toru Tanaka | Rushmore |
| Kate Sargeant | Emily |
| Joel Sweto | Brown |
| Patrick Laborteaux | Fester |
| Race Nelson | Marcus |
| D.J. Harder | Hammer |
| Baha Jackson | Bully |
| Scott Caudill | Bully |
| Fritzi Burr | Babysitter |
| Tasen Chou | Store Owner |
| Clifton Powell | FBI Agent Kurl |
| Al Septien | FBI Agent Green |
Technical Credits
| Jon Turteltaub | Director |
| Rick Avery | Stunts |
| Bill Robbins | Sound Mixer |
| Carla Bowen | Asst. Director |
| Martha Chang | Producer |
| Edward Emanuel | Screenwriter |
| Greg Grande | Art Director |
| James Kang | Producer |
| Kenny Kim | Original Story |
| Ken Kirchener | Art Director |
| Rick Marvin | Score Composer |
| Mona May | Costumes/Costume Designer |
| Richard Michalak | Cinematographer |
| Richard W. Park | Associate Producer |
| Kirk M. Petruccelli | Production Designer |
| Carol Pressman | Set Decoration/Design |
| David Rennie | Editor |
| J.B. Rogers | Asst. Director |
| Simon Sheen | Producer |
| Susan Stremple | Producer |