Elizabeth Afton, also known as Circus Baby, is the secondary antagonist of the Five Nights at Freddy's franchise. She was the daughter of William Afton, and the younger sister of Michael Afton. She had a deep trust in her father and a love for his creations, admiring everything he does. However, one of his machines, Circus Baby, attacked and killed her, and her soul possessed the animatronic. She is shown to have drastically changed from the event, and is now cold, heartless and violent.