<P> The group return to Bigweld Industries where Bigweld fires Ratchet, but is tricked and knocked unconscious . Rodney, Cappy and the Rusties rescue Bigweld and are chased across the city, but leave Piper and Aunt Fanny behind . The remaining robots arrive at the Chop Shop, where Bigweld accidentally rolls into the processing area . Piper and Aunt Fanny arrive with an army of outmodes . A battle between the outmodes, Gasket's henchmen and the super-sweepers ensues . Wonderbot fights Gasket, who falls into her own furnace . Ratchet loses his upgrades after getting trapped in some chains . Rodney disables the super-sweepers and rescues Bigweld . Retaking control of Bigweld Industries, Bigweld visits Rivet Town to tell Rodney's parents their son is his' right - hand bot' and eventual successor . </P> <Ul> <Li> Ewan McGregor as Rodney Copperbottom, a young blue robot and aspiring inventor . </Li> <Li> Halle Berry as Cappy, an executive at Bigweld Industries and Rodney's love interest . </Li> <Li> Robin Williams as Fender Pinwheeler, a red robot who befriends Rodney and is constantly falling apart . </Li> <Li> Mel Brooks as Bigweld, a jolly inventor and owner of Bigweld Industries . </Li> <Li> Seth Rogen as Bently Sonic, who comes to the Rusties in their time of need . </Li> <Li> Greg Kinnear as Phineas T. Ratchet, a materialistic, arrogant, treacherous, greedy, and self - centered robot, Rodney's arch - rival, and Madame Gasket's son, partner and henchman . </Li> <Li> Jim Broadbent as Madame Gasket, a twisted, malevolent, manipulative, and tyrannical robot, Rodney's arch - enemy, Bigweld's arch - rival, and Ratchet's mother, partner, and boss . </Li> <Li> Amanda Bynes as Piper Pinwheeler, a yellow robot who is Fender's younger sister . </Li> <Li> Drew Carey as Crank Casey, an orange robot who befriends Rodney . </Li> <Li> Jennifer Coolidge as Aunt Fanny, a kind, motherly robot who takes in' broken' robots . </Li> <Li> Harland Williams as Lugnut, a large green robot who befriends Rodney along with his mute companion Diesel . </Li> <Li> Stanley Tucci as Herb Copperbottom, Rodney's father and a dishwasher at Gunk's . </Li> <Li> Dianne Wiest as Lydia Copperbottom, Rodney's mother . </Li> <Li> Chris Wedge as Wonderbot / Phone booth </Li> <Li> Natasha Lyonne as Loretta Geargrinder, a receptionist at Bigweld Industries and Fender's love interest . </Li> <Li> Paul Giamatti as Tim, the gate keeper at Bigweld Industries </Li> <Li> Dan Hedaya as Mr. Gunk, Herb's rude, inconsiderate boss . </Li> <Li> Brian Scott McFadden as Trashcan Bot </Li> <Li> Jay Leno as Fire Hydrant </Li> <Li> Lucille Bliss as Pigeon Lady </Li> <Li> Paula Abdul as Wristwatch #1 </Li> <Li> Randy Jackson as Wristwatch #2 </Li> <Li> Al Roker as Mailbox </Li> <Li> Stephen Tobolowsky as Bigmouth Executive / Forge </Li> <Li> Tim Nordquist as Tin Man </Li> <Li> Lowell Ganz as Mr. Gasket, Madame Gasket's husband and Ratchet's father . </Li> <Li> James Earl Jones as a Darth Vader voice box at a hardware store </Li> </Ul> <Li> Ewan McGregor as Rodney Copperbottom, a young blue robot and aspiring inventor . </Li> <Li> Halle Berry as Cappy, an executive at Bigweld Industries and Rodney's love interest . </Li>

Who does the voice of rodney in robots