| Cast |
| Ewan McGregor (Voice) |
|
| Robin Williams (Voice) |
|
| Halle Berry |
Cappy (voice)
|
| Robin Williams |
Fender (voice)
|
| Mel Brooks |
Bigweld (voice)
|
| Ewan McGregor |
Rodney Copperbottom (voice)
|
| Paula Abdul |
Watch (voice)
|
| Lucille Bliss |
Pigeon Lady (voice)
|
| Terry Bradshaw |
Broken Arm Bot (voice)
|
| Jim Broadbent |
Madame Gasket (voice)
|
| Amanda Bynes |
Piper (voice)
|
| Drew Carey |
Crank (voice)
|
| Jennifer Coolidge |
Aunt Fanny (voice)
|
| Dylan Denton |
Youngest Rodney (voice)
|
| Will Denton |
Young Rodney (voice)
|
| Marshall Efron |
Lamppost/Toilet Bot/Bass Drum/Microphone (voice)
|
| Damien Fahey |
Stage Announcer (voice)
|
| Lowell Ganz |
Mr. Gasket (voice)
|
| Paul Giamatti |
Tim the Gate Guard (voice)
|
| Dan Hedaya |
Mr. Gunk (voice)
|
| Jackie Hoffman |
Water Cooler (voice)
|
| James Earl Jones |
Voice Box at Hardware Store (voice)
|
| Greg Kinnear |
Ratchet (voice)
|
| Jay Leno |
Fire Hydrant (voice)
|
| Natasha Lyonne |
Loretta Geargrinder (voice)
|
| Brian McFadden |
Trashcan Bot (voice)
|
| Tim Nordquist |
Tin Man (voice)
|
| Jansen Panettiere |
Younger Rodney (voice)
|
| Al Roker |
Mailbox (voice)
|
| Alan Rosenberg |
Jack Hammer (voice)
|
| Stephen Tobolowsky |
Bigmouth Executive/Forge (voice)
|
| Stanley Tucci |
Herb Copperbottom (voice)
|
| Chris Wedge |
(voice)
|
| Dianne Wiest |
Mrs. Copperbottom (voice)
|
| Harland Williams |
Lug (voice)
|
| Crawford Wilson |
Young Rodney (voice)
|
| Lara Cody |
Additional Voices (voice)
|
| Cooper Cowgill |
Additional Voices (voice)
|
| David Crommett |
Additional Voices (voice)
|
| Darin De Paul |
Additional Voices (voice) (as Darin DePaul)
|
| Dann Fink |
Additional Voices (voice)
|
| Timothy Gulan |
Additional Voices (voice)
|
