His actual name is PartyKiller. He is quiet, observant and in some way depressed. The Partypoopers are the first friendly Entity in the Backrooms, and they wear black jeans and a black hoodie. They also wear a blue mask with a sad face on it, and their actual face can never be seen. Partygoers and them were in war, Partygoers won and thought they wiped Partypoopers out of existence, Partygoers are mostly agressive towards them so they are deadly afraid of them. Partypoopers also hate parties.