He pursues Guest relentlessly. When the lights are on, he flees, but when the lights go out, he hunts Guest. If you fail to evade him... there is no telling what will happen. Hide in the closet when he approaches. If you hide too late or too obviously, you will be caught, so hide the moment you hear footsteps. He might let you slide once if you're spotted, but there are no second chances. He cannot speak and cannot communicate through writing.