Circus Baby (commonly referred to as Baby) is the secondary antagonist of the Five Nights at Freddy’s series and the animatronic mascot of Circus Baby's Pizza World invented by Afton Robotics, LLC and made for Fazbear Entertainment, Inc. Baby is haunted by the soul of Elizabeth Afton, who was the daughter of the serial killer William Afton. However, during the completion ending, Elizabeth's soul was presumably set free.