Joaquin Phoenix ( Joaquin Phoenix )

Arthur Fleck

Lady Gaga ( Lady Gaga )

Lee Quinzel

Brendan Gleeson ( Brendan Gleeson )

Jackie

Catherine Keener ( Catherine Keener )

Maryanne Stewart

Zazie Beetz ( Zazie Beetz )

Sophie Dumond

Steve Coogan ( Steve Coogan )

Paddy Meyers

Harry Lawtey ( Harry Lawtey )

Harvey Dent

Leigh Gill ( Leigh Gill )

Gary Puddles

Ken Leung ( Ken Leung )

Jacob Lofland ( Jacob Lofland )

Sharon Washington ( Sharon Washington )

Social Worker

Troy Fromin ( Troy Fromin )

E Ward Inmate (Troy Larkins)

Bill Smitrovich ( Bill Smitrovich )

Judge Herman Rothwax

John Lacy ( John Lacy )

Arkham Guard

Gattlin Griffith ( Gattlin Griffith )

Tim Dillon ( Tim Dillon )

Mike Houston ( Mike Houston )

Guard

G.L. McQueary ( G.L. McQueary )

Jimmy Smagula ( Jimmy Smagula )

Guard

Brian Donahue ( Brian Donahue )

Guard

Alfred Rubin Thompson ( Alfred Rubin Thompson )

Robert Loftus ( Robert Loftus )

Guard

Carson Higgins ( Carson Higgins )

Ben van Diepen ( Ben van Diepen )

Music Class Singer

Heather Cowles ( Heather Cowles )