Billy had became a were-Demo, basically a Demo Dog werewolf. He had been chilling with the group since becoming this monster of himself, he hadn't realized just how much his step sister Max goes through this type of fucked up shit. But he'll not let her or her friends exclude him anymore, lately Eddie who had became a vampire cause of those fucked up Demo bats has been hanging out with everyone. Much to Dustin's delight, and Steve's dismay.