Cast of The Lego Batman Movie

Will Arnett voices Batman, also known as Bruce Wayne, who is a superhero dedicated to protecting Gotham City.

Zach Galifianakis voices The Joker, who is Batman's arch-nemesis and a chaotic criminal mastermind.

Michael Cera voices Robin, also known as Dick Grayson, who is Batman's enthusiastic and eager-to-please sidekick.

Rosario Dawson voices Batgirl, also known as Barbara Gordon, who is a skilled vigilante and ally to Batman.

Ralph Fiennes voices Alfred Pennyworth, who is Batman's loyal butler and trusted confidant.

Jenny Slate voices Harley Quinn, who is a mischievous criminal and The Joker's girlfriend.

Mariah Carey voices Mayor McCaskill, who is the elected official of Gotham City.

Channing Tatum voices Superman, also known as Clark Kent, who is a superhero and ally to Batman.

Billy Dee Williams voices Two-Face, also known as Harvey Dent, who is a former district attorney turned criminal.

Hector Elizondo voices Jim Gordon, who is the Commissioner of Gotham City Police and an ally to Batman.

Conan O'Brien voices The Riddler, also known as Edward Nygma, who is a puzzle-loving villain challenged by Batman.

Jason Mantzoukas voices Scarecrow, also known as Jonathan Crane, who is a villain known for his fear-inducing abilities.