 | Josh Hutcherson als Walter Budwing |
 | Jonah Bobo als Danny Budwing |
 | Dax Shepard als Astronaut |
 | Kristen Stewart als Lisa Budwing |
 | Tim Robbins als Dad (Mr. Budwing) |
 | Frank Oz als Robot (voice) |
 | John Alexander als Robot |
 | Derek Mears als Lead Zorgon |
 | Douglas Tait als Zorgon |
 | Joe Bucaro III als Zorgon |
 | Jeff Wolfe als Zorgon |
| Jon Favreau | Director |
| David Koepp | Screenplay |
| John Kamps | Screenplay |
| Michael De Luca | Producer |
| Scott Kroopf | Producer |
| William Teitler | Producer |
| John Debney | Original Music Composer |
| Guillermo Navarro | Director of Photography |
| Avy Kaufman | Casting |
| Dan Lebental | Editor |
| J. Michael Riva | Production Design |
| Richard F. Mays | Art Direction |
| Lauri Gaffin | Set Decoration |
| Laura Jean Shannon | Costume Design |
| Melanie Hughes | Makeup Department Head |
| Pat Welch | Costume Supervisor |
| Paulette Dauber | Unit Publicist |
| David F. Klassen | Supervising Art Director |
| Kevin Kaska | Orchestrator |
| Mike Watts | Orchestrator |
| Peter Billingsley | Co-Producer |
| Louis D'Esposito | Executive Producer |
| Ted Field | Executive Producer |
| Rebecca Young | Art Department Coordinator |
| Wendy Riva | Assistant Art Director |
| Constantine Sekeris | Conceptual Design |
| Walt Hadfield | Construction Coordinator |
| Anthony Carlino | Leadman |
| Maret Wicken | Painter |
| Phil Saunders | Production Illustrator |
| Guy A. Mussori | Props |
| Peter Davidson | Set Designer |
| Andrew P. Flores | Standby Painter |
| Charles Schner | Additional Camera |
| Roberto 'Tito' Blasini | Camera Operator |
| Jason Talbert | Grip |
| Merrick Morton | Still Photographer |
| Rebecca Gregg | Assistant Costume Designer |
| Roxanne Wightman | Hair Department Head |
| Linda D. Flowers | Key Hair Stylist |
| Amy L. Disarro | Key Makeup Artist |
| Raymond Bulinski | Craft Service |
| John F. Teeple | Driver |
| Shane Mahan | Makeup Effects |
| Kelly Birrer | Propmaker |
| Scott Johnson | Set Production Assistant |
| Cottalango Loorthu | Software Engineer |
| David R. Maier | Stand In |
| Pat Jackson | Studio Teacher |
| Thomas Robinson Harper | Stunt Coordinator |
| Mark Brooks | Stunts |
| Dan Henley | Transportation Captain |
| Timothy E. Henley | Transportation Co-Captain |
| John Placencia | Video Assist Operator |
| Harry Muller | Color Timer |
| Tristan M. Brighty | First Assistant Editor |
| Corwin A. Bibb | Best Boy Electric |
| Christopher Franey | Best Boy Electrician |
| R. Michael Yope | Electrician |
| Louis DiCesare | Gaffer |
| Mike Amorelli | Rigging Gaffer |
| William Ambrose | Rigging Grip |
| Tim Hillman | Location Manager |
| Ron Segro | Post Production Accountant |
| Jackie Szymanski | Production Accountant |
| Shannon Hamed | Production Coordinator |
| Robin Mulcahy Fisichella | Production Supervisor |
| Flax Glor | Publicist |
| Louis D'Esposito | Unit Production Manager |
| Lisa J. Levine | ADR Supervisor |
| Todd Harris | Assistant Sound Editor |
| Donald Flick | Foley Editor |
| Tanya Noel Hill | Music Editor |
| Tom Boyd | Musician |
| Frank Bennett | Orchestrator |
| Robert Fernandez | Scoring Mixer |
| Stephen Hunter Flick | Sound Designer |
| Richard Burton | Sound Effects Editor |
| Adam Blantz | Sound Mixer |
| Mitch Gates | 3D Artist |
| Keith W. Smith | Animation Supervisor |
| Enrique Bilsland | Mechanical Designer |
| Jon G. Belyeu | Special Effects Supervisor |
| Cris Borgnine | Visual Effects |
| Greg Baxter | Visual Effects Coordinator |
| Timothy Eaton | Visual Effects Editor |
| Joseph B. Conmy IV | Visual Effects Producer |
| Joe Bauer | Visual Effects Supervisor |
| Alison Fisher | Dialogue Editor |
| Ray Harvie | Storyboard Artist |
| Russell Bobbitt | Property Master |
| Chris Newlander | Costumer |
| Hans Berggren | Second Second Assistant Director |
| Jim Stubblefield | Assistant Property Master |
| Chris John Jones | Creative Director |
| Joey Genitempo | Set Painter |
| Eric Ramsey | Storyboard Artist |
| Randy Severino | Swing |
| Kyle Cooper | Title Designer |
| Michael London | ADR Recordist |
| Michael J. Broomberg | Foley Artist |
| Kyle Rochlin | Foley Mixer |
| Philip A. Schwartz | Utility Sound |
| John J. Downey | Special Effects Technician |
| Bob Lloyd | VFX Artist |
| Patrick Ballin | Visual Effects Assistant Editor |
| Ken Dackermann | Visual Effects Compositor |
| Anthony Kramer | Visual Effects Production Assistant |
| Marion Spates | Visual Effects Production Manager |
| Brian Adams | Visual Effects Technical Director |
| Will Dearborn | Additional Second Assistant Camera |
| Matthew A. Del Ruth | Assistant Camera |
| Markus Mentzer | Camera Loader |
| Arthur Blum | Dolly Grip |
| Jessica Daniels | Casting Assistant |
| Stacey Frederick | Assistant Editor |
| Paul McGhee | Digital Color Timer |
| Natasha Leonnet | Digital Colorist |
| Donnie Creighton | Digital Intermediate Assistant |
| Boyd Steer | Negative Cutter |
| Darrin Lipscomb | Assistant Location Manager |
| John Debney | Conductor |
| Kevin Roy | Additional Production Assistant |
| Zack Heath | Art Department Production Assistant |
| Michelle A. De Mayo | Assistant Accountant |
| Harold Groshon | Assistant Chief Lighting Technician |
| Lisa Joelle Curtis | Assistant Production Coordinator |
| Alex Skvorzov | Chief Lighting Technician |
| Erik Bruhwiler | Digital Compositor |
| Jennifer Bender | Extras Casting |
| Kristen Branan | Head of Production |
| Emily Mann | Intern |
| Scott Barnes | Lighting Programmer |
| Wes Denton | Production Assistant |
| Jeff Barnes | Production Executive |
| Sandra J. Smith | Production Secretary |
| Nina Harlan | Rotoscoping Artist |
| Tracy Browne | Second Assistant Accountant |
| Peter G. Travers | Visual Effects Supervisor |
| Leandro Visconti | Compositing Supervisor |
| Chris Van Allsburg | Book |
| Michelle Sebek | Stunts |
| Logan Brown | Stunts |
| Michael Runyard | Stunts |
| Reid Harper | Stunts |
| Shawn Kautz | Stunts |
| Mike Justus | Stunts |
| Tad Griffith | Stunts |
| Mic Rodgers | Stunts |
| Tim Trella | Stunts |
| Bruce Franklin | First Assistant Director |
| Conte Mark Matal | Second Assistant Director |
| Daniel J. Lombardo | Visual Effects Producer |
| Alicia Accardo | Script Supervisor |
| Harry K. Garvin | "A" Camera Operator |
| Harry K. Garvin | Steadicam Operator |
| Leo J. Napolitano | "B" Camera Operator |
| Timothy James Kane | First Assistant "A" Camera |
| Tony Muller | Second Assistant "A" Camera |
| Matthew E. Alper | First Assistant "B" Camera |
| Matthew Haskins | Second Assistant "B" Camera |
| Lori Stilson | Costumer |
| Faye Sevilla | Costumer |
| Rick Stribling | Key Grip |
| Matthew Devitt | Best Boy Grip |
| Mark Ulano | Production Sound Mixer |
| Tom Hartig | Boom Operator |
| Donald Frazee | Special Effects Technician |
| Robert Harman | Special Effects Technician |
| Richard O. Helmer | Special Effects Technician |
| Edward Kennedy | Special Effects Technician |
| William Lee | Special Effects Technician |
| Louis Lindwall | Special Effects Technician |
| Jeffrey Machit | Special Effects Technician |
| Paul Sabourin | Special Effects Technician |
| Harold Selig | Special Effects Technician |
| Kenneth Hunter | Location Manager |
| Sheilah Sullivan | Production Accountant |
| Ross Jensen | Assistant Accountant |
| Bob Brown | Stunts |
| Crystal Dalman | Stunts |
| Lisa Hoyle | Stunts |
