Aaron Taylor-Johnson (Dave Lizewski / Kick-Ass), Chloë Grace Moretz (Mindy Macready / Hit-Girl), Christopher Mintz-Plasse (Chris D'Amico / The Mother Fucker), Jim Carrey (Sal Bertolinni / Colonel Stars and Stripes), Morris Chestnut (Detective Marcus Williams), Claudia Lee (Brooke), Amy Anzel (Mrs. Zane), Clark Duke (Marty / Battle Guy), Augustus Prew (Todd / Ass Kicker), Donald Faison (Dr. Gravity), Garrett M. Brown (Mr. Lizewski), Lyndsy Fonseca (Katie Deauxma), Monica Dolan (Tommys Mutter), Steven Mackintosh (Tommys Vater), Mary Kitchen (Reporterin), Matt Steinberg (Mr. Radical)