Heat Vision is reporting that Gary Oldman will be voicing a character in the new Kung Fu Panda sequel, The Kaboom of Doom.  Gary plays Sirius Black in the Harry Potter films.

Gary Oldman has joined the voice cast of DreamWorks Animation’s “Kung Fu Panda: The Kaboom of Doom.” Jennifer Yuh Nelson is directing the film, slated for a summer 2011 release.

“Kaboom” is a 3D sequel to the successful 2008 film about Po, a panda voiced by Jack Black. The story centres on Po’s search for other pandas and his run-in with a group of bandits. Oldman voices a character named Peacock who helps Po find the bandits but is more than he seems.