Margot Robbie
Role: Harley Quinn
Rosie Perez
Role: Renee Montoya
Mary Elizabeth Winstead
Role: Helena Bertinelli / Huntress
Jurnee Smollett
Role: Dinah Lance / Black Canary
Ewan McGregor
Role: Roman Sionis
Ella Jay Basco
Role: Cassandra Cain
Chris Messina
Role: Victor Zsasz
David Ury
Role: Sleazy Breeder
Sara Montez
Role: Shallow Friend #1 / Kathrine
Izabel Pakzad
Role: Shallow Friend #2
Daniel Bernhardt
Role: Sionis' Chauffeur
Kc Strubbe
Role: Naïve Teammate
Jacky Shu
Role: Skeptical Teammate
Paloma Esparza Rabinov
Role: Bitchy Teammate
Derek Wilson
Role: Detective Tim Munroe
Joe Bucaro III
Role: Carlos Rossi
James Henry Williams Jr.
Role: Ace Chemical Police Officer
François Chau
Role: Mr. Keo
Miyuki Matsunaga
Role: Mrs. Keo
Anna Mikami
Role: Miss Keo (16 yrs)
Bruno Oliver
Role: Bodega Cook (Sal)
Keisha Tucker
Role: Roller Derby Girl
Matthew Willig
Role: Happy
Jeremy Denzlinger
Role: Desk Sergeant
Michael Masini
Role: Officer Drago
Charles Carpenter
Role: Processing Officer
Daniel Cole
Role: Patrol Cop
Jesse Bush
Role: Patrol Cop
Steven Williams
Role: Captain Patrick Erickson
Charlene Amoia
Role: Maria Bertinelli
Paul Lasa
Role: Helena's Father
Ella Mika
Role: Young Helena
Robert Catrini
Role: Stefano Galante
Eddie Alfano
Role: Helena's Bodyguard
Chris Carnel
Role: Desk Sergeant
Buddy Sosthand
Role: Coffee Cup Cop
Tim Sitarz
Role: Donut Cop
Shawn Balentine
Role: Key Card Cop
Shahaub Roudbari
Role: Smarmy Guy
Pramod Kumar
Role: Irate Shopkeeper
Christine Engh
Role: Elderly Woman
K.K. Barrett
Role: Dr. Aguilar
David Bianchi
Role: Sionis Henchman #1
Simon Rhee
Role: Cell Guard
Terrence Julien
Role: Cell Guard
George Crayton
Role: Prisoner
Caleb Spillyards
Role: Prisoner
Christian Womack
Role: Prisoner
Bryan Sloyer
Role: Prisoner
Kofi Yiadom
Role: Mercenary
Efka Kvaraciejus
Role: Mercenary
Sam Hargrave
Role: Mercenary
Dennis Keiffer
Role: Mercenary
Bojana Novaković
Role: Erika
Andy Hoff
Role: Erika's Date
Eric Michael Cole
Role: Disgruntled Man
Oakley Lehman
Role: Mercedes Gang
Richard King
Role: Mercedes Gang
Tim Rigby
Role: RR Passenger
Judy Kain
Role: Bespectacled Secretary (uncredited)
Rj Wayne
Role: Tough Guy (uncredited)
Zack Whyel
Role: Roman's Healer (uncredited)
Ellay Watson
Role: Roller Derby Fan (uncredited)
Karen Teliha
Role: Nun (uncredited)
Nev Smith
Role: Gotham Detective (uncredited)
Greice Santo
Role: Scantily Clad Crystal (uncredited)
Zeus Sagittarius
Role: Roman's Goon (uncredited)
Talon Reid
Role: Roman's Goon (uncredited)
Matthew Parry-Jones
Role: Club Goer (uncredited)
Brian Nuesi
Role: Husband (uncredited)
Adinett Nsabimana
Role: Girl at the Bar (uncredited)
Brandon Garic Notch
Role: Roman's Lift Goon (uncredited)
Anthony Molinari
Role: Mafiosi (uncredited)
Ego Mikitas
Role: Don (uncredited)
Lenora May
Role: Mrs. Marcucci (uncredited)
Jeff Lipary
Role: BBB Gang Member (uncredited)
Brandon Irvin
Role: Roman's Goon (uncredited)
Damon Hoffman
Role: Bodybuilder (uncredited)
William Guirola
Role: Thug (uncredited)
Nico Greetham
Role: Young Goon (uncredited)
Luis Richard Gomez
Role: Harley Super Fan (uncredited)
Shad Gaspard
Role: Lords Leader (uncredited)
Julian Garcia
Role: Roman's Goon (uncredited)
Eddie J. Fernandez
Role: Gauntlet Cop (uncredited)
Mike Ferguson
Role: Lord of the Avenue (uncredited)
Gerald Downey
Role: Judge (uncredited)
Jack Dourakos
Role: Club Goer (uncredited)
Sadyr Diouf
Role: Roman's Goon (uncredited)
Joey Courteau
Role: Club Dancer (uncredited)
Dan Cole
Role: Officer Timm (uncredited)
Lucas Di Medio
Role: Roman's Bodyguard (uncredited)
Jason Catron
Role: Sprang Bridge Soldier (uncredited)
David Anthony Buglione
Role: Joe Bertinelli (uncredited)