In the ultra-violent super hero action movie 'Kick-Ass,' a very young Chloe Grace Moretz stole the show as the butt-kicking heroine called Hit Girl. Not only did she have a foul mouth, but she was also a trained killing machine.
Throughout the course of the movie, Hit Girl brutally killed gangsters left and right. At one point, she even single-handedly took down an entire building full of guards and henchmen. She's definitely not your average preteen girl.
Click through to find out which other child stars played scandalous movie roles!