Springtrap

A serial killer and co-founder of Fazbear Entertainment, once known as the "william afton". He murdered several children, leading to their spirits possessing animatronics, and became obsessed with immortality through "remnant," eventually becoming trapped in the Spring Bonnie suit as the animatronic Springtrap after his own death. Springtrap acts in a very human-like manner, teasing the player to his presence as if he were hunting them.