Aaron Taylor-Johnson as Dave Lizewski / Kick-Ass

Chloë Grace Moretz as Mindy Macready / Hit Girl

Christopher Mintz-Plasse as Chris D'Amico / The Motherfucker

Lyndsy Fonseca as Katie Deauxma

Jim Carrey as Colonel Stars and Stripes

Iain Glen as Uncle Ralph

Clark Duke as Marty / Battle Guy

Lindy Booth as Night Bitch

Garrett M. Brown as Mr. Lizewski

Morris Chestnut as Detective Marcus Williams

Donald Faison as Dr. Gravity

John Leguizamo as Javier

Augustus Prew as Todd / Ass Kicker

Robert Emms as Insect Man

Monica Dolan as Tommy's Mum

Steven Mackintosh as Tommy's Dad

Andy Nyman as The Tumor

Daniel Kaluuya as Black Death

Tom Wu as Genghis Carnage

Olga Kurkulina as Mother Russia

Yancy Butler as Mrs. D'Amico

Claudia Lee as Brooke

Ella Purnell as Dolce

Tanyaradzwa Fear as Harlow

Benedict Wong as Mr. Kim

Sophie Wu as Erika Cho

Amy Anzel as Mrs. Zane

Matt Steinberg as Mr. Radical

Trenyce as Coach Podell

Angelica Jopling as Lois

Enzo Cilenti as Lou

Wesley Morgan as Simon

Dimitri Vantis as Tony

Stewart Scudamore as Eyal

Tom Benedict Knight as Alley Hood

Mary Kitchen as News Reporter

Charlie Clapham as Goth Kid

Katrina Durden as Red Fang

Trevor Allan Davies as Old Man

Paul Raposo as Guido #1

David Vena as Guido #2

Chris Chan as Store Clerk

Chuck Liddell as Chuck Liddell

King Lau as Chinese Bouncer

Chantelle Chung as Chinese Hooker

Eben Young as News Reader

John Bregar as Mother Russia Cop

Christopher Cordell as Mother Russia Cop

Mike Chute as Mother Russia Cop

Shane Daly as Mother Russia Cop

Kevan Kase as Mother Russia Cop

Martin Roach as Mother Russia Cop

John Schwab as Detective

Todd Boyce as Chief of Police

Jesse Camacho as Onlooker

Anthony J. Mifsud as Convict #1

Rob Archer as Convict #2

Jamie Andrew Cutler as Goggles

Adam Bond as Funeral Cop

Sia Alipour as BloodSpike (uncredited)

Bhanu Alley as Sleazy Japanese Businessman (uncredited)

Lee Asquith-Coe as Officer Barnhart (uncredited)

Richard Bradshaw as Cop #3 (uncredited)

Samantha Coughlan as Apocalypse Meow (uncredited)

Ellis Crewe-Candy as Pimp Daddy (uncredited)

Leigh Dent as Passerby (uncredited)

Katrina Durden as Red Fang (uncredited)

Sophie Ellis as Mean Girl (uncredited)

James Embree as Cop #1 (uncredited)

Cynthia Garbutt as Epilogue Nurse (uncredited)

David Golt as Homeless Man in Soup Kitchen (uncredited)

Howard Green as Arresting Officer #2 (uncredited)

Jenny Jacoya as Firefox (uncredited)

Ethan J. Knight as SWAT Commander Lee Renolds (uncredited)

Liam Logan as Police Lieutenant S.W.A.T. Team (uncredited)

Matthew David McCarthy as NYPD Cop Sergeant Ellis (uncredited)

Vander McLeod as New York Cop (uncredited)

Allistair McNab as TMC (uncredited)

Katherine Moran as Jock Girlfriend (uncredited)

Stuart Mulcaster as NYPD (uncredited)

John E O'Grady as Rocket Man (uncredited)

Amanda Piery as Moon Bird (uncredited)

Alexis Rodney as Skinny (uncredited)

Bailey Ryan as Hot Nerd Girl (uncredited)

Wolf Ryman as Guido (uncredited)

Shane Salter as NYPD Cop in Alley (uncredited)

Parker Sawyers as Blast Hammer (uncredited)

Linus Scheithauer as Thunderwasp (uncredited)

Tom Swacha as Bad Ass Warrior (uncredited)

Leon Symnz as Justice Forever (uncredited)

Winson Ting as Chinese Gang Member (uncredited)

Arran Topham as Cop #2 (uncredited)

Baxter Westby as Homeless Boy (uncredited)

Daniel Aiken as Arresting Officer #72 (uncredited)

Tanya Fear as Harlow