The Lego Batman Movie 2 - Characters and Voice Actors Batman / Bruce Wayne - Will Arnett Alfred Pennyworth - Ralph Fiennes Dick Grayson / Robin - Michael Cera Barbara Gordon / Batgirl - Rosario Dawson The Joker - Zach Galifianakis Mayor of Gotham City - Mariah Carey Superman - Channing Tatum Wonder Woman / Diana - Cobie Smulders The rest of the characters from the trailer: Lego Bane Lego Clayface Lego Catwoman Lego Poison Ivy / Pamela Isley Lego Harley Quinn / Harleen Quinzel Lego Killer Croc Lego Two-Face / Harvey Dent Lego Riddler / Edward Nigma Lego Penguin / Oswald Cobblepot Lego Scarecrow / Jonathan Crane Lego Flash / Barry Allen Lego Cyborg / Victor Stone Lego Aquaman / Arthur Curry Lego Green Lantern / Hal Jordan Lego Green Arrow / Oliver Queen