A costumed entity lay slumped against the wall of a containment cell, often catatonic despite its lingering consciousness. MD Foundation researchers stopped by to check on this dangerous test subject, dubbed Springtrap. They were close to discovering the secrets of immortality, if only they could get the soul of William Afton to speak. It turned out that he was once a British-American serial killer. Even death could not diminish his cruelty and bitterness, which worsened his murderous habits.