No one ever said acting was easy. For this list, we'll be ranking the films that featured roles that demanded a lot from their young thespians. Be it through the flick’s inclusion of heavy, dramatic monologues or adult themes, these roles put child actors in the type of scenes they likely wouldn’t have been allowed to watch if they weren’t involved. Our list includes Regan MacNeil in "The Exorcist" (1973), Hit-Girl in "Kick-Ass" (2010), Dolores ‘Lolita’ Haze in "Lolita" (1962; 1997), and more! Join WatchMojo as we count down our picks for the Top 10 Movie Roles That Were too Mature for Child Actors.