Rush takes on the form of a floating asymmetrical dark gray face covered by smoke and particles. It has no limbs or torso. It has a large open smile, exposing rows of white disfigured teeth. It will flicker the lights to indicate its arrival. A rumbling sound can be heard to signify its presence. It will dim the lights slightly as a final warning before rushing through the rooms from behind, killing anyone who isn't hiding. If it does not spot you immediately, it will leave the room and despawn.