Cast of Joker

Joaquin Phoenix portrays Arthur Fleck, a mentally unstable man who transforms into the infamous Joker.

Robert De Niro plays the role of Murray Franklin, a popular talk show host who becomes intertwined with Arthur's journey.

Zazie Beetz takes on the character of Sophie Dumond, a single mother and love interest of Arthur.

Frances Conroy portrays Penny Fleck, Arthur's mother who has a significant impact on his life.

Brett Cullen plays the role of Thomas Wayne, a wealthy businessman and father of Bruce Wayne (Batman).

Shea Whigham portrays Detective Burke, a police detective who crosses paths with Arthur during his descent into madness.

Bill Camp takes on the character of Detective Garrity, another police detective involved in the investigation.

Glenn Fleshler plays the role of Randall, a coworker of Arthur's who becomes a significant part of his story.