Näyttelijät

• Aaron Taylor-Johnson — Dave Lizewski / Kick-Ass
• Chloë Grace Moretz — Mindy Macready / Hit-Girl
• Nicolas Cage — Damon Macready / Big Daddy
• Christopher Mintz-Plasse — Chris D'Amico / Red Mist
• Mark Strong — Frank D'Amico
• Lyndsy Fonseca — Katie Deauxma
• Omari Hardwick — Marcus
• Clark Duke — Marty
• Evan Peters — Todd
• Michael Rispoli — Big Joe
• Xander Berkeley — Detective Vic Gigante
• Elizabeth McGovern — Mrs. Lizewski
• Dexter Fletcher — Cody
• Jason Flemyng — Lobby Goon
• Yancy Butler — Angie D'Amico
• Deborah Twiss — Mrs. Zane
• Sophie Wu — Erika Cho
• Corey Johnson — Sporty Goon
• Tamer Hassan — Matthew
• Adrian Martinez — Ginger Goon
• Stu 'Large' Riley — Huge Goon
• Anthony Desio — Baby Goon
• Randall Batinkoff — Tre Fernandez
• Joe Bacino — Posh Goon
• Garrett M. Brown — Mr. Lizewski
• Craig Ferguson — Himself