Margot Robbie

Character: Harley Quinn

Idris Elba

Character: Bloodsport

John Cena

Character: Peacemaker

Joel Kinnaman

Character: Colonel Rick Flag

Sylvester Stallone

Character: King Shark (voice)

Viola Davis

Character: Amanda Waller

David Dastmalchian

Character: Polka-Dot Man

Daniela Melchior

Character: Ratcatcher 2

Michael Rooker

Character: Savant

Jai Courtney

Character: Captain Boomerang

Peter Capaldi

Character: Thinker

Alice Braga

Character: Sol Soria

Pete Davidson

Character: Blackguard

Joaquín Cosío

Character: Mayor General Mateo Suarez

Juan Diego Botto

Character: Presidente General Silvio Luna

Storm Reid

Character: Tyla

Nathan Fillion

Character: T.D.K.

Taika Waititi

Character: Ratcatcher

Steve Agee

Character: John Economos / On-Set King Shark

Sean Gunn

Character: Weasel / Calendar Man

John Ostrander

Character: Doctor Fitzgibbon

Flula Borg

Character: Javelin

Mayling Ng

Character: Mongal

Stephen Blackehart

Character: Briscoe

Tinashe Kajese

Character: Flo Crawley

Jennifer Holland

Character: Emilia Harcourt

Fernando Martinez

Character: Sliced Dome Soldado

Dee Bradley Baker

Character: Sebastian (voice)

Natalia Safran

Character: Kaleidoscope

Jared Leland Gore

Character: Double Down

Rey Hernandez

Character: Teniente

Ray Benitez

Character: Coronel

Reinaldo Faberlle

Character: Large Guerrilla

Jonathan Fritschi

Character: Delicious Hot Dog Guerrilla

Josh Ventura

Character: Astronaut

Gerardo Davila

Character: General Vera

Mikaela Hoover

Character: Camila

Lynne Ashe

Character: Polka-Dot Man's Mom

Julio Cesar Ruiz

Character: Milton

J.R. Adduci

Character: Road Block Soldado

Curtis Lyons Jr.

Character: Road Block Soldado #3

Maya Le Clark

Character: Young Cleo

Elideusa Gomes Almeida

Character: La Gatita Presents Traditional Corto Maltese Dancer

Shanna Kernan

Character: La Gatita Presents Traditional Corto Maltese Dancer

Bridget Taylor

Character: La Gatita Presents Traditional Corto Maltese Dancer

Monica Rivera

Character: La Gatita Presents Traditional Corto Maltese Dancer

Andrea Andrade

Character: La Gatita Waitress

Giovanni Rodriguez

Character: Texting Torturer

Giovannie Cruz

Character: Isabella

Sergio Carlo

Character: Isabella's Second

Edgar Zanabria

Character: Torn-In-Half Soldado

Grecia Balboa

Character: Security Dispatcher

Kenneth Trujillo

Character: Bespectacled Soldado

Randy Havens

Character: Star-Crossed Man

Michelle Civile

Character: Star-Crossed Woman

Gabrielle Manning

Character: Star-Crossed Kid

Michael Aaron Milligan

Character: Star-Crossed Dude

Diany Rodriguez

Character: Star-Crossed Gal

Teresita Mans

Character: Star-Crossed Lady

Terence Rosemore

Character: Crew Chief

Lloyd Kaufman

Character: Dancing La Gatita Bar Patron (uncredited)

Pom Klementieff

Character: La Gatita Amable Dancer (uncredited)