8. Rhoda Penmark - The Bad Seed (1956)
Rhoda Penmark is a fantastic creepy kid. With her blonde pigtails and immaculate dress, Rhoda presents as a picture of a perfect little girl. She is extremely polite and she is a perfectionist concerning everything that she does. Rhoda manages to keep up this facade for most of the film's duration. Whenever we see her vicious, sly and devious true self, it is truly shocking. Most of what Rhoda does is off screen which makes the film even creepier as we can only guess at her catalogue of misadventures. Her poor mother is tormented by the dilemma - what do you do if you know your child is a killer? Just watch her emotionally disintegrate throughout the film and you will be glad you are not in her place. She tries to pretend that everything is okay, but she is really fooling herself - Rhoda truly is the 'bad seed'. Shirley Temple crossed with Charles Manson.