A prequel set before the haunting of the Lambert family reveals how gifted psychic Elise Rainier reluctantly agrees to use her ability to contact the dead in order to help a teenage girl who has been targeted by a dangerous supernatural entity. This is the Oxygen mask used by “The Man Who Can’t Breathe” (Michael Reid MacKay), also known as the Wheezing Demon, he is a very dangerous and malevolent entity from The Further and is the main antagonist of the 2015 film, Insidious: Chapter 3. The Wheezing Demon is known for possessing his victims, usually forcing them to commit suicide and keep them in the darkness as his “pets”.