Ewan McGregor Rodney Copperbottom (voice)
Jennifer Coolidge Aunt Fanny (voice)
Stanley Tucci Herb Copperbottom (voice)
Robin Williams Fender (voice)
Halle Berry Cappy (voice)
Drew Carey Crank (voice)
Al Roker Mailbox (voice)
Chris Wedge Wonderbot / Phone Booth (voice), Director
Jackie Hoffman Water Cooler (voice)
Natasha Lyonne Loretta Geargrinder (voice)
Paul Giamatti Tim the Gate Guard (voice)
Christian Kaplan Casting
Jay Leno Fire Hydrant (voice)
Greg Kinnear Ratchet (voice)
Mel Brooks Bigweld (voice)
David Lindsay-Abaire Screenplay, Story
Dan Hedaya Mr. Gunk (voice)
Randy Jackson Watch #2 (voice) (uncredited)
Enrico Casarosa Storyboard Artist
Dianne Wiest Mrs. Copperbottom (voice)
John Powell Original Music Composer
Tim Gomillion Sound Recordist
Will Denton Young Rodney (voice)
James Earl Jones Voice Box at Hardware Store (voice)
Kent Beyda Additional Editing, Thanks
Amanda Bynes Piper (voice)
Alan Rosenberg Jack Hammer (voice)
Stephen Tobolowsky Bigmouth Executive / Forge (voice)
Bob Camp Storyboard Artist
Tom Carlson Music Editor
Harland Williams Lug (voice)
Jim Broadbent Madame Gasket (voice)
David Lucarelli ADR Recordist
Paula Abdul Watch (voice)
Steve Martino Art Direction
Tim Nordquist Tin Man (voice), Associate Editor
Moroni Taylor Storyboard Artist
Arun Ram-Mohan Lighting Artist
Terry Bradshaw Broken Arm Bot (voice)
Damien Fahey Stage Announcer (voice)
Paul Downs Animation
James Brown Diesel (archive footage) (uncredited)
Natasha Leonnet Digital Color Timer
William Joyce Producer, Production Design
Marshall Efron Lamppost / Toilet Bot / Bass Drum / Microphone
Robert Fernandez Scoring Mixer
Darin De Paul Additional Voices
David Esneault Lighting Supervisor
Mark Filip Apprentice Sound Editor
Nicholas Renbeck Supervising Dialogue Editor, Supervising ADR Editor
Sean Garnhart Diesel (uncredited), Sound Designer
Chris Meledandri Executive Producer
Sondra James Additional Voices
Jansen Panettiere Younger Rodney (voice)
Bill Orrico First Assistant Sound Editor
Johnny Gidcomb ADR Voice Casting
Babaloo Mandel Screenplay
Jim McClain Story
Ron Mita Story
Pete Anthony Conductor
Bruce Winant Additional Voices / ADR Loop Group
Derek Casari ADR Engineer
Lowell Ganz Mr. Gasket (voice), Screenplay
Allen Dam Production Consultant
Marissa Littlefield Dialogue Editor
Carlos Saldanha Co-Director
Gary Burritt Negative Cutter
Dann Fink Additional Voices
Bob Gordon Co-Producer
Jim Passon Color Timer
John Carnochan Editor
Marko Costanzo Foley Artist