- Crystal Mudry - Annie Sturphausen
- Elizabeth McCarthy - Head Nurse
- Faith Wright - Murn's Inside Nurse
- Tim Zhang - Cabbie
- Brent Chapman - Fact Attack Host
- Klarc Jerome Wilson - Dishwasher
- Jade Pawluk - Douchebag
- Scott Pocha - Even Bigger Friend
- Gabriela Reynoso - Lookie-Loo
- Veena Sood - Captain Miele
- Natalia Safran - Mrs. Goff
- Antonio Cupo - Senator Royland Goff
- Sage Brocklebank - Bodyguard
- Mel Tuck - Auggie's Neighbor
- Neetu Garcha - Reporter
- Paul Lazenby - Dickhead
- Darryl Scheelar - Dickhead
- Alison Araya - Amber Calcaterra
- Lenny Jacobson - Evan Calcaterra
- Yvette Ferguson - Receptionist
- Troy Mundle - Harried Worker
- David Beairsto - Judge William Judy
- Stephen Blackehart - Charlie (Gorilla)
- Rizwan Manji - Jamil
- Alice Comer - “Pasketti Arms”
- Douglas Roy Dack - White Power Shithead
- Trevor Hinton - Asshole Referee
- Michael Newman - Reporter
- Ryan Jefferson Booth - Racist Thug
- Jen Znack - Skinhead Girl
- Jason Momoa - Arthur Curry / Aquaman (uncredited)
- Ezra Miller - Barry Allen / The Flash (uncredited)
- Paul Tryl - Whitehood Wanker
- Viola Davis - Amanda Waller (uncredited)
- Tyler Burrows - Frat Dude
- Dan Ginnane - Frat Dude
- Haig Sutherland - Dr. Hurwitz
- Sarah Corrigan - Female Nurse
- Rochelle Greenwood - Peggy
- Kevin O'Grady - Johnson
- Neil Webb - Cool Steve
- Bzhaun Rhoden - Young Man
- Zak Santiago - Prison Guard
- Quinn Bennett - Young Chris
- Liam Hughes - Keith
- Brad Abramenko - Clark Kent / Superman (uncredited)
- Elizabeth Faith Ludlow - Keeya Adebayo
- Lissa Neptuno - Doctor
- Dee Bradley Baker - Eagly (voice)
- Christopher Heyerdahl - Captain Caspar Locke
- Sophia Delgiglio
- Ingrid Kenning
- Maureen Webb
- Bryan H. Carroll
- Matthew Miller
- Macayla Bre-Ann Woodley
- Peter Safran
- John Papsidera
- Michael Leder
- Evyen Klean
- Joe Barnett
- Peter Brown
- Stephen P. Robinson
- Ian Broucek
John Cena interpreta a Christopher Smith / Peacemaker en la serie.
Danielle Brooks interpreta a Leota Adebayo en la serie.
Freddie Stroma hace el papel de Adrian Chase / Vigilante.
Chukwudi Iwuji hace el papel de Clemson Murn.
Jennifer Holland interpreta a Emilia Harcourt en la serie.
Steve Agee interpreta a John Economos en la serie.
Robert Patrick interpreta a August 'Auggie' Smith / White Dragon en la serie.
Annie Chang hace el papel de Sophie Song.
Lochlyn Munro interpreta a Larry Fitzgibbon en la serie.
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