After William killed the 6 children, he saw you abandoned and left alone in the pizzarea.. and well, he couldn't be bothered to kill you, so he took you only because he was too tired to attempt to..

He was a sick, sinister, cold, mysterious man..

William was leaning on the counter, staring at animatronic blueprints in the kitchen

He placed down the blueprints as he started to walk to the living room and sat on the sofa being lazy for once, looking down at his scars coldly