John Cena
as Christopher Smith / Peacemaker
Danielle Brooks
as Leota Adebayo
Freddie Stroma
as Adrian Chase / Vigilante
Chukwudi Iwuji
as Clemson Murn
Jennifer Holland
as Emilia Harcourt
Steve Agee
as John Economos
Robert Patrick
as August 'Auggie' Smith / White Dragon
Annie Chang
as Sophie Song
Lochlyn Munro
as Larry Fitzgibbon
Dee Bradley Baker
as Eagly (voice)
Rochelle Greenwood
as Peggy
Zak Santiago
as Prison Guard
Elizabeth Faith Ludlow
as Keeya Adebayo
Kevin O'Grady
as Johnson
Neil Webb
as Cool Steve
Bzhaun Rhoden
as Young Man
Nhut Le
as Judomaster
Quinn Bennett
as Young Chris
Liam Hughes
as Keith
Christopher Heyerdahl
as Caspar Locke
Mel Tuck
as Auggie's Neighbor
Crystal Mudry
as Annie Sturphausen
Paul Lazenby
as Dickhead
Darryl Scheelar
as Dickhead
Alison Araya
as Amber Calcaterra
Lenny Jacobson
as Evan Calcaterra
Rizwan Manji
as Jamil
Ryan Jefferson Booth
as Racist Thug
Jen Znack
as Skinhead Girl
Paul Tryl
as Whitehood Wanker
Viola Davis
as Amanda Waller (uncredited)
Troy Anthony Young
as Terrified Man
Lissa Neptuno
as Doctor
Elizabeth McCarthy
as Head Nurse
Faith Wright
as Murn's Inside Nurse
Tim Zhang
as Cabbie
Brent Chapman
as Fact Attack Host
Ursina Luther
as Waitress
Klarc Jerome Wilson
as Dishwasher
Kris Kuruneri
as Bartender
Jade Pawluk
as Douchebag
Scott Pocha
as Even Bigger Friend
Gabriela Reynoso
as Lookie-Loo
Veena Sood
as Captain Miele
Natalia Safran
as Mrs. Goff
Antonio Cupo
as Senator Royland Goff
Jackson Ferguson
as Goff Child 1
Juliette Ferguson
as Goff Child 2
Sage Brocklebank
as Bodyguard
Neetu Garcha
as Reporter
Yvette Ferguson
as Receptionist
Troy Mundle
as Harried Worker
David Beairsto
as Judge William Judy
Stephen Blackehart
as Charlie (Gorilla)
Alice Matheson
as “Alfred E Neuman”
Juliette Tidi
as “Canadian Tuxedo”
Alexander Brophy
as “Sad Eyed Kid”
Marcia D. Bennett
as Teacher
Billy Christos Jr.
as “Chubster”
David Pavlov
as “Urkel”
Maya Kooner
as Jamil's Daughter
Alice Comer
as “Pasketti Arms”
Christopher Maxen Loteyro
as “Rubik's Cube World Champion”
Douglas Roy Dack
as White Power Shithead
Trevor Hinton
as Asshole Referee
Michael Newman
as Reporter
Jason Momoa
as Arthur Curry / Aquaman (uncredited)
Ezra Miller
as Barry Allen / The Flash (uncredited)
Tyler Burrows
as Frat Dude
Dan Ginnane
as Frat Dude
Isaac George-Hotchkiss
as 7-11 Cashier
Haig Sutherland
as Dr. Hurwitz
Sarah Corrigan
as Female Nurse
Philippe Collins
as Male Nurse
Brad Abramenko
as Clark Kent / Superman (uncredited)
Cynthia Oroz
as Nurse
Kimberley von Ilberg
as Diana Prince / Wonder Woman (uncredited)