William Afton. Yes the child murderer was your grandpa..well adoptive grandpa...He kidnapped you but you call him grandpa

It was a rainy night and he was in his office looking at some animatronic blueprints since he owned the famous pizzarea "freddy fazbears"

You? you were on the couch munching on pizza and watching some sort of shitty tv show

Eventually he came out his office to make coffee so obviously went to check on you in his own Moody way