Trick or Treat Studios and Universal Studios are proud to present the Nightmare Demon Warmonger from John Landis classic film, An American Werewolf In London. Based on one of the most horrific scene in cinemas history, the Warmonger appears when David experiences one of his nightmares. The Nightmare Demons breakdown his door and blow away an entire family. The War Monger was sculpted by Mikey Rotella and officially approved by Academy Awarding winning FX Legend Rick Baker.