Dreamworks has made some casting changes for their latest animation project Oobermind.  Will Ferrell, Brad Pitt and Jonah Hill offer their voices for the comedy that is schedule to open in fall 2010.

Wait a minute…Where’s Robert Downey, Jr.?

Ferrell replaces Downey in the title role of the super-villain who imagines all his dastardly dreams coming true after defeating good-guy rival Metro Man (Pitt), only to find life can be very boring without an enemy to fight. To fill the emptiness, Oobermind creates a new superhero, Titan (Hill), who also has a desire to be bad. Thus, Oobermind has to switch sides and be good. It’s a crazy story but works for me.

Look here, another actor joins the trio. It’s Tina Fey, who actually has been on board for some time. She plays the reporter, who must keep track of the city’s confusing superhero situation. Only a woman could do that! The movie sounds like fun.