<Ul> <Li> Will Arnett as Bruce Wayne / Batman </Li> <Li> Zach Galifianakis as The Joker </Li> <Li> Michael Cera as Richard "Dick" Grayson / Robin </Li> <Li> Rosario Dawson as Barbara Gordon / Batgirl </Li> <Li> Ralph Fiennes as Alfred Pennyworth </Li> <Li> Jenny Slate as Dr. Harleen Quinzel / Harley Quinn </Li> <Li> Siri / Susan Bennett as The Batcomputer (referred to as "' Puter" in the film) </Li> <Li> Héctor Elizondo as Commissioner James "Jim" Gordon </Li> <Li> Lauren White as Chief O'Hara <Ul> <Li> White also voices Medusa </Li> </Ul> </Li> <Li> Mariah Carey as Mayor McCaskill </Li> <Li> Eddie Izzard as Lord Voldemort </Li> <Li> Seth Green as King Kong </Li> <Li> Jemaine Clement as Sauron </Li> <Li> Billy Dee Williams as Two - Face </Li> <Li> Riki Lindhome as Poison Ivy <Ul> <Li> Lindhome also voices Wicked Witch of the West </Li> </Ul> </Li> <Li> Conan O'Brien as Riddler </Li> <Li> Jason Mantzoukas as Scarecrow </Li> <Li> Zoë Kravitz as Catwoman </Li> <Li> Kate Micucci as Clayface </Li> <Li> Doug Benson as Bane </Li> <Li> David Burrows as Anchorman Phil, Mr. Freeze </Li> <Li> Matt Villa as Killer Croc </Li> <Li> John Venzon as Penguin </Li> <Li> Laura Kightlinger as Reporter Pippa <Ul> <Li> Kightlinger also voices Orca </Li> </Ul> </Li> <Li> Todd Hansen as Captain Dale </Li> <Li> Chris McKay as Pilot Bill </Li> <Li> Mark Jonathan Davis as Himself / Richard Cheese (archive recordings) </Li> <Li> Channing Tatum as Kal - El / Clark Kent / Superman </Li> <Li> Ellie Kemper as Phyllis, the Voice of the Phantom Zone </Li> <Li> Jonah Hill as Hal Jordan / Green Lantern </Li> <Li> Adam DeVine as Barry Allen / The Flash </Li> <Li> Brent Musburger as Reporter #1 </Li> <Li> Ralph Garman as Reporter #2 </Li> <Li> Chris Hardwick as Reporter #3 </Li> </Ul> <Li> Will Arnett as Bruce Wayne / Batman </Li> <Li> Zach Galifianakis as The Joker </Li> <Li> Michael Cera as Richard "Dick" Grayson / Robin </Li>

Who plays the joker in the lego batman movie