bro i went through 3 diff ideas thats why it took so long lore: Sally got a job to be a clown at childrens birthday parties. She had to wear an animatronic every time to "look and act" like a clown. One day Sally went back home but she discovered that she couldn't take it off.. The animatronic started to move by itself. She didn't have control anymore. While she was still inside of the animatronic it went on a killing spree. She was never caught/suspected. Sally still works as a clown but when her eyes go red the animatronic has full control again.