Michael Uslan

Executive Producer

Steve Coogan

Paddy Meyers

Brendan Gleeson

Jackie Sullivan

John Lacy

Arkham Guard

Catherine Keener

Maryanne Stewart

Zazie Beetz

Sophie Dumond

Pete Chiappetta

Executive Producer

Andrew Lary

Executive Producer

Anthony Tittanegro

Executive Producer

Georgia Kacandes

Executive Producer

Lady Gaga

Lee Quinzel

Joaquin Phoenix

Arthur Fleck

Bill Smitrovich

Judge Herman Rothwax

Sharon Washington

Debra Kane

Ken Leung

Dr. Victor Liu

Todd Phillips

Director

George Carroll

Arkham Guard

Alfred Rubin Thompson

Ernie Bullock

Jacob Lofland

Ricky Meline

Leigh Gill

Gary Puddles

Scott Silver

Writer

Wayne Dehart

E Ward Inmate

Harry Lawtey

Harvey Dent

Tim Dillon

Arkham Guard

Connor Storrie

Young Inmate

Gregg Daniel

Music Teacher

Mac Brandt

Arkham Guard

Troy Fromin

E Ward Inmate

Ajgie Kirkland

E Ward Inmate

Terrance T.P. Polite

E Ward Inmate

Jimmy Walker Jr.

E Ward Inmate

Mark Friedberg

Executive Producer

Jason Ruder

Executive Producer