The Joker Is Hitting the Big Screen With a Star-Studded Cast — Check Out the Full List

Phoenix's Joker will be a failed stand-up comedian who is driven insane after being disregarded and abused by society. His insanity leads him to become the psychotic criminal mastermind we can't seem to get enough of.

Conroy will portray Arthur's mother, Penny, who seems to have a slightly dysfunctional relationship with her son.

Cullen's version of Thomas Wayne will differ from any other iterations. While he's still the billionaire philanthropist father of Bruce Wayne, this time his character will be less sympathetic than more traditional incarnations, which we get a taste of in the trailer when he's seen criticizing the Joker.

The Deadpool 2 star will play Sophie Dumond, a single mother and cynical love interest for Arthur.

Hodge will tackle the esteemed butler and caretaker of the Wayne family.

De Niro will portray Murray Franklin, a talk show host who has a hand in driving Arthur toward a life of crime.

If Beale Street Could Talk's Henry will play a nurse at Arkham Asylum.

Callen has been cast as an "aging stripper." Oh boy.

Whigham will portray an officer in the Gotham City Police Department.

Camp will join Whigham as an officer in the GCPD.

Maron will play a character named Ted Marco, who works alongside DeNiro's character at the talk show.

Fleshler has been cast as a comedian, possibly one who works with Arthur before he turns dark.

Pais has been cast as a character named Hoyt Vaughn.