Ewan McGregorRodney Copperbottom (voice)
Greg KinnearRatchet (voice)
Mel BrooksBigweld (voice)
Amanda BynesPiper (voice)
Robin WilliamsFender (voice)
Jim BroadbentMadame Gasket (voice)
Stanley TucciHerb Copperbottom (voice)
Dianne WiestMrs. Copperbottom (voice)
Harland WilliamsLug (voice)
Jennifer CoolidgeAunt Fanny (voice)
Paul GiamattiTim the Gate Guard (voice)
Natasha LyonneLoretta Geargrinder (voice)
Chris WedgeWonderbot / Phone Booth (voice)
Dan HedayaMr. Gunk (voice)
Marshall EfronLamppost / Toilet Bot / Bass Drum / Microphone
Terry BradshawBroken Arm Bot (voice)
Lucille BlissPigeon Lady (voice)
Jay LenoFire Hydrant (voice)
Lowell GanzMr. Gasket (voice)
Jackie HoffmanWater Cooler (voice)
Brian Scott McFaddenTrashcan Bot (voice)
Tim NordquistTin Man (voice)
James Earl JonesVoice Box at Hardware Store (voice)
Damien FaheyStage Announcer (voice)
Stephen TobolowskyBigmouth Executive / Forge (voice)
Jansen PanettiereYounger Rodney (voice)
Will DentonYoung Rodney (voice)
Crawford WilsonYoung Rodney (voice)
Dylan DentonYoungest Rodney (voice)
Jennifer PeritoAdditional Voices
Alan RosenbergJack Hammer (voice)
Lara CodyAdditional Voices
Cooper CowgillAdditional Voices
David CrommettAdditional Voices
Darin De PaulAdditional Voices
Dann FinkAdditional Voices
Timothy GulanAdditional Voices
Ray IannicelliAdditional Voices
Sondra JamesAdditional Voices
Vanessa LemonidesAdditional Voices
Marcus MauriceAdditional Voices
David RossmerAdditional Voices
Bruce WinantAdditional Voices / ADR Loop Group
Chris MoylesStage Announcer (voice)
ChingyDJ Robot (uncredited)
Sean GarnhartDiesel (uncredited)
Paul UrmsonDiesel (uncredited)
Randy JacksonWatch #2 (voice) (uncredited)
James BrownDiesel (archive footage) (uncredited)
Frank WelkerSweeper (voice) (uncredited)
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