Aaron Taylor-Johnson character Dave Lizewski / Kick-Ass
Chloë Grace Moretz character Mindy Macready / Hit-Girl
Nicolas Cage character Damon Macready / Big Daddy
Christopher Mintz-Plasse character Chris D'Amico / Red Mist
Mark Strong character Frank D'Amico
Omari Hardwick character Marcus
Xander Berkeley character Detective Vic Gigante
Garrett M. Brown character Mr. Lizewski
Clark Duke character Marty
Evan Peters character Todd
Deborah Twiss character Mrs. Zane
Lyndsy Fonseca character Katie Deauxma
Sophie Wu character Erika Cho
Elizabeth McGovern character Mrs. Lizewski
Stu 'Large' Riley character Huge Goon
Michael Rispoli character Big Joe
Corey Johnson character Sporty Goon
Kenneth Simmons character Scary Goon
Anthony Desio character Baby Goon
Randall Batinkoff character Tre Fernandez
Dexter Fletcher character Cody
Yancy Butler character Angie D'Amico
Craig Ferguson character Himself
Jason Flemyng character Lobby Goon
Adrian Martinez character Ginger Goon
Joe Bacino character Posh Goon
Johnny Hopkins character 1st Gang Kid
Ohene Cornelius character 2nd Gang Kid
Carlos Besse Peres character Buttons
Russell Bentley character Medic
Tamer Hassan character Matthew
Tim Plester character Danil
Hubert Boorder character Oscar Juarez
Christopher McGuire character Diner Fight Guy #1
Max White character Diner Fight Guy #2
Dean Copkov character Diner Fight Guy #3
Jacob Cartwright character Running Teenager
Maurice DuBois character News Anchor
Dana Tyler character News Anchor
Omar A. Soriano character Leroy
Katrena Rochell character Female Junkie
Kofi Natei character Rasul
Dan Duran character Reporter
Louis Young character Breaking News Reporter
Val Jobara character Nervous Goon
Quinn Smith character Big Mean Boy
Kirk Tingblad character Audience Member
Peter Bartfay character Comic Store Customer (uncredited)
Jason Salkey character 1st Cop (uncredited)
Daphne Cheung character Siew Ling (uncredited)
Russell De Rozario character Man in Elevator (uncredited)
Annie Cooper character Jess (uncredited)
Wayne Curnew character Bartender (uncredited)
Tangara Jones character Gang Girl (uncredited)
Rab Affleck character Moustache Goon (uncredited)
Alexander Hathaway character Comic Book Store Manager (uncredited)