Ferrell signs on for new Dreamworks flick

Will Ferrell has replaced Robert Downey Jr. in 'Oobermind'.

Brad Pitt and Jonah Hill have also joined the voice cast of the forthcoming DreamWorks movie, which follows the titular character, an evil criminal mastermind - played by Ferrell - who finds his life becomes dull when he defeats his rival, Brad's Metro Man.

Hill will voice Titan, a new superhero created by Oobermind while Tina Fey voices a reporter tracking the crimefighters.

'Sherlock Holmes' star Downey Jr cited "scheduling conflicts" for his departure from the project, adding fuel to speculation he is to play the role of Lestat - made famous by Tom Cruise in 'Interview With The Vampire' - in a new retelling of Anne Rice's 'Vampire Chronicles' novels.

'Oobermind' is scheduled for release in November 2010.