Aaron Taylor-Johnson as Dave Lizewski / Kick-Ass

Chloë Grace Moretz as Mindy Macready / Hit Girl

Nicolas Cage as Damon Macready / Big Daddy

Lyndsy Fonseca as Katie Deauxma

Mark Strong as Frank D'Amico

Deborah Twiss as Mrs. Zane

Christopher Mintz-Plasse as Chris D'Amico / Red Mist

Elizabeth McGovern as Mrs. Lizewski

Omari Hardwick as Sergeant Marcus Williams

Xander Berkeley as Detective Gigante

Garrett M. Brown as Mr. Lizewski

Clark Duke as Marty

Evan Peters as Todd

Sophie Wu as Erika Cho

Stu 'Large' Riley as Huge Goon

Michael Rispoli as Big Joe

Corey Johnson as Sporty Goon

Kenneth Simmons as Scary Goon

Anthony Desio as Baby Goon

Randall Batinkoff as Tre Fernandez

Dexter Fletcher as Cody

Yancy Butler as Angie D'Amico

Craig Ferguson as Craig Ferguson

Jason Flemyng as Lobby Goon

Adrian Martinez as Ginger Goon

Joe Bacino as Posh Goon

Johnny Hopkins as 1st Gang Kid

Ohene Cornelius as 2nd Gang Kid

Carlos Besse Peres as Buttons

Russell Bentley as Medic

Tamer Hassan as Matthew

Tim Plester as Danil

Hubert Boorder as Oscar Juarez

Christopher McGuire as Diner Fight Guy #1

Max White as Diner Fight Guy #2

Dean Copkov as Diner Fight Guy #3

Jacob Cartwright as Running Teenager

Maurice DuBois as News Anchor

Dana Tyler as News Anchor

Omar A. Soriano as Leroy

Katrena Rochell as Female Junkie

Kofi Natei as Rasul

Dan Duran as Reporter

Louis Young as Breaking News Reporter

Val Jobara as Nervous Goon

Quinn Smith as Big Mean Boy

Kirk Tingblad as Audience Member (uncredited)

Peter Bartfay as Comic Store Customer (uncredited)

Jason Salkey as 1st Cop (uncredited)

Daphne Cheung as Siew Ling (uncredited)

Russell De Rozario as Man in Elevator (uncredited)

Annie Cooper as Jess (uncredited)

Adam Blampied as Kid in Comic Book Store (uncredited)

Wayne Curnew as Bartender (uncredited)

Tangara Jones as Gang Girl (uncredited)

Rab Affleck as Moustache Goon (uncredited)

Alexander Hathaway as Comic Book Store Manager (uncredited)