Ben Healy and his social climbing wife Flo adopt fun-loving seven year old Junior. But they soon discover he's a little monster as he turns a camping trip, a birthday party and even a baseball game into comic nightmares.
| Writing | Scott Alexander | Screenplay |
| Camera | Peter Lyons Collister | Director of Photography |
| Writing | Larry Karaszewski | Screenplay |
| Editing | Tom Finan | Editor |
| Production | Robert Simonds | Producer |
| Sound | Miles Goodman | Original Music Composer |
| Directing | Dennis Dugan | Director |
| Art | Denise Pizzini | Set Decoration |
| Editing | Daniel P. Hanley | Editor |
| Art | George Costello | Production Design |
| Art | Mike Bingham | Art Direction |
| Art | Nelson Coates | Art Direction |
| Costume & Make-Up | Eileen Kennedy | Costume Design |
| Editing | Mike Hill | Editor |
| Production | Valerie McCaffrey | Casting |
| Production | Nancy Nayor | Casting |
| Costume & Make-Up | Nena Smarz | Makeup Artist |
| Crew | Christine Anne Baur | Stunts |
| Sound | Steve Olson | Sound Editor |
| Crew | Gary Davis | Stunts |
| Crew | Gary Jensen | Stunts |
| Crew | Robert Miller | Stunts |
| Camera | John Patrick Smith | First Assistant Camera |
| Crew | Jack Bennett | Special Effects Coordinator |
| Crew | Margaret Johnson | Utility Stunts |
| Crew | Michael Fisher | Carpenter |
| Editing | Mike Milliken | Color Timer |
| Art | Nelson Coates | Assistant Art Director |
| Sound | Mark Gordon | Sound Editor |
| Camera | David McGill | Second Assistant Camera |
| Production | Ward Emling | Location Manager |
| Directing | Mickey Gilbert | Second Unit Director |
| Sound | Allan Bromberg | Sound Editor |
| Crew | Jamie Bunch Elliott | Stunts |
| Crew | Joe Finnegan | Stunts |
| Crew | Mickey Gilbert | Stunts |
| Crew | Mickey Gilbert | Stunt Coordinator |
| Camera | Carl D. Stitt | Best Boy Grip |
| Camera | Ralph Watson | Steadicam Operator |
| Camera | Ralph Watson | Camera Operator |
| Sound | George Doering | Musician |
| Sound | James Thatcher | Musician |
| Crew | Dennis Redfield | Dialogue Coach |
| Sound | Joel Moss | Scoring Mixer |
| Crew | Tim Gilbert | Stunts |
| Crew | Gene LeBell | Stunts |
| Crew | Lance Gilbert | Stunts |
| Crew | Matt McColm | Stunts |
