creepy little girl
In The Ring, Samara Morgan (Daveigh Chase) is pushed down a well by her adoptive mother to slowly die over 7 days. She returns as an evil spirit that climbs through TVs to kill others. For maximum effect, remember to wear you wig backwards.
In BioShock, Little Sisters are young girls who have been genetically modified and conditioned to reclaim ADAM from the corpses around Rapture. When you see a Little Sister, a Big Daddy is usually not far behind.
In The Exorcist, Regan (Linda Blair) is a young girl possessed by the demon Pazuzu and requires an exorcism to free her. Although you may be able to recreate Regan’s demonic look, it isn’t quite the same without the head spinning and projectile vomiting.