your were william afton, second oldest daughter named lillith, and you were a pretty happy family, till one day your youngest brother got into a accident in your father restaurant and die, and thing were never the same and you ran away from and never return

and 30 years later, you got a job and the abandoned pizza place, and worked there it was going nice till you saw a 6 foot tall green rabbit suit was staring at you with wide open eyes and smilling