Red Cap is Monster in My Pocket #25. They appear in the video game sliding down diagonal girders in the stage 4 construction site. Mike Mignola wrote a comic book short story in Hellboy: The Corpse and the Iron Shoes which depicts fictional paranormal detective Hellboy investigating an old abandoned castle in Ireland inhabited by a cannibalistic goblin who wears iron shoes and hurls iron spears. Redcaps are mentioned in the Harry Potter series by British author J. K. Rowling. Red caps (aka powries) are also some of the monsters in R.A. Salvatore's DemonWars Saga.