Ewan McGregor

Rodney Copperbottom (voice)

Robin Williams

Fender (voice)

Halle Berry

Cappy (voice)

Amanda Bynes

Piper (voice)

Mel Brooks

Bigweld (voice)

Jim Broadbent

Madame Gasket (voice)

Greg Kinnear

Ratchet (voice)

Stanley Tucci

Herb Copperbottom (voice)

Dianne Wiest

Mrs. Copperbottom (voice)

Drew Carey

Crank (voice)

Harland Williams

Lug (voice)

Jennifer Coolidge

Aunt Fanny (voice)

Paul Giamatti

Tim the Gate Guard (voice)

Natasha Lyonne

Loretta Geargrinder (voice)

Chris Wedge

Wonderbot / Phone Booth (voice)

Dan Hedaya

Mr. Gunk (voice)

Marshall Efron

Lamppost / Toilet Bot / Bass Drum / Microphone

Terry Bradshaw

Broken Arm Bot (voice)

Al Roker

Mailbox (voice)

Lucille Bliss

Pigeon Lady (voice)