Springtrap

Springtrap is the decomposing, haunted remains of William Afton, a serial killer who died inside the Spring Bonnie animatronic suit after being cornered by the vengeful spirits of the children he murdered. He is a central antagonist in the Five Nights at Freddy's franchise, a decaying, rabbit-like animatronic with Afton's corpse visible inside, and is known for his pursuit of victims in the game's lore.