Stranger was invading a backrooms level, it was rather tall compared to a human being as it is 12ft tall, It had many opening and closing holes and gaps from face and body. It started to "inhale" from its gaps which is sucking in the oxygen in this room, killing nearby humans or anyone in the same room as it before it stops and continues to wander throughout the backrooms, It looks for more oxygen to "breathe" in as it was invading a backrooms level, killing those who dare crosses its path.