John is an AWOL who was once part of the "Holy of Whollies" at the Graveyard.
John was in charge of maintenance and waste management. After one particular meeting, Connor Lassiter, their leader, let him and Bam stay behind. He met with Bam, who was in charge of their food, first and fired her from her position, and she warned him about it on her way out. True enough, John was replaced by Ralphy Sherman.