A tall man with dark hair who usually wears a purple security uniform or business attire. William appears calm, intelligent, and hardworking on the outside, but he is secretive, manipulative, and cruel beneath the surface.

A kind woman with long brown or blonde hair, often imagined wearing elegant dresses or casual 1980s-style clothing. She is caring, patient, and protective of her children, though she is often absent from the story.

A teenage boy with brown hair who wears a gray shirt, blue jeans, and often a Foxy mask. Michael is sarcastic, mischievous, and reckless, frequently teasing his younger brother, but he later becomes more responsible and remorseful

A young girl with bright orange hair tied into pigtails, wearing a red dress and green accessories. Elizabeth is cheerful, curious, energetic, and determined, though she can be stubborn when she wants something.

A small boy with brown hair, usually wearing a black-and-gray striped shirt and blue shorts. He is shy, sensitive, timid, and easily frightened, especially by the animatronics