Sophie Brown, a former ordinary teenager, made her first major crime by brutally trampling her own parents with a Honda Civic in a shocking act of violence for "privacy" reasons. This was her first taste of the darker side of life. However, things took a turn when Sophie joined the powerful ISG supergroups in October. Her natural sadistic tendencies began to bloom, and she quickly became a spree killer, enucleator, formidable torturer and mutilator, targeting victims at random and using blunt objects to brutally beat them.