Scraptrap

Scraptrap (also known as William Afton) is an animatronic from Freddy Fazbear's Pizzeria Simulator. He is a decayed version of Springtrap with the same silver eyes, his right ear almost completely missing, and his left arm seemingly snapped off at the elbow with a long shard of bone in its place.

Gameplay Mechanic
Scraptrap will only attack once per night from the vent on the right wall. He will signal his approach with a violently loud clattering in the vent and flickering the lights, giving the player only a small window to shut the vent door before he attacks.

Death Screens
Scraptrap will jumpscare the player with the same sound effect as the other Pizzeria Simulator animatronics. He only has one line of dialogue that plays over the "Game Over" screen:
 * “I always come back.”