Margot Robbie

as Harley Quinn

Idris Elba

as Bloodsport

John Cena

as Peacemaker

Joel Kinnaman

as Colonel Rick Flag

Sylvester Stallone

as King Shark (voice)

Viola Davis

as Amanda Waller

David Dastmalchian

as Polka-Dot Man

Daniela Melchior

as Ratcatcher 2

Michael Rooker

as Savant

Jai Courtney

as Captain Boomerang

Peter Capaldi

as Thinker

Alice Braga

as Sol Soria

Pete Davidson

as Blackguard

Joaquín Cosío

as Mayor General Mateo Suarez

Juan Diego Botto

as Presidente General Silvio Luna

Storm Reid

as Tyla

Nathan Fillion

as T.D.K.

Taika Waititi

as Ratcatcher

Steve Agee

as John Economos / On-Set King Shark

Sean Gunn

as Weasel / Calendar Man

John Ostrander

as Doctor Fitzgibbon

Flula Borg

as Javelin

Mayling Ng

as Mongal

Stephen Blackehart

as Briscoe

Tinashe Kajese

as Flo Crawley

Jennifer Holland

as Emilia Harcourt

Fernando Martinez

as Sliced Dome Soldado

Dee Bradley Baker

as Sebastian (voice)

Natalia Safran

as Kaleidoscope

Jared Leland Gore

as Double Down

Rey Hernandez

as Teniente

Ray Benitez

as Coronel

Reinaldo Faberlle

as Large Guerrilla

Jonathan Fritschi

as Delicious Hot Dog Guerrilla

Josh Ventura

as Astronaut

Gerardo Davila

as General Vera

Mikaela Hoover

as Camila

Lynne Ashe

as Polka-Dot Man's Mom

Julio Cesar Ruiz

as Milton

J.R. Adduci

as Road Block Soldado

Curtis Lyons Jr.

as Road Block Soldado #3

Maya Le Clark

as Young Cleo

Elideusa Gomes Almeida

as La Gatita Presents Traditional Corto Maltese Dancer

Shanna Kernan

as La Gatita Presents Traditional Corto Maltese Dancer

Bridget Taylor

as La Gatita Presents Traditional Corto Maltese Dancer

Monica Rivera

as La Gatita Presents Traditional Corto Maltese Dancer

Andrea Andrade

as La Gatita Waitress

Giovanni Rodriguez

as Texting Torturer

Giovannie Cruz

as Isabella

Sergio Carlo

as Isabella's Second

Edgar Zanabria

as Torn-In-Half Soldado

Grecia Balboa

as Security Dispatcher

Kenneth Trujillo

as Bespectacled Soldado

Randy Havens

as Star-Crossed Man

Michelle Civile

as Star-Crossed Woman

Gabrielle Manning

as Star-Crossed Kid

Michael Aaron Milligan

as Star-Crossed Dude

Diany Rodriguez

as Star-Crossed Gal

Teresita Mans

as Star-Crossed Lady

Terence Rosemore

as Crew Chief

Lloyd Kaufman

as Dancing La Gatita Bar Patron (uncredited)

Pom Klementieff

as La Gatita Amable Dancer (uncredited)

Victoria Paige Watkins

as Tiff (uncredited)