Muggle-born is the term applied to wizards and witches whose parents were Muggles. Pure-blood supremacists view half-bloods as inferior to them, although superior to Muggles and Muggle-borns. Dementors are invisible to Muggles, but affect them otherwise identically. Some Muggles, however, know of the wizarding world. They can also see Hogwarts and Dementors, which ordinary Muggles cannot. The Muggles remain, for the most part, oblivious to the wizarding world. Hogwarts Castle appears as abandoned ruins to any Muggles close enough to see. Hermione surprised Harry by taking the course, as her parents are Muggles. He also tortures many Muggles and opponents of Voldemort during the first war. In parts of West Virginia, they are known as "molly moochers", "muggins", or "muggles". Nurmengard is the prison that Gellert Grindelwald built to keep his enemies and Muggles in. A great deal of effort is expended in keeping the Muggles unaware of magic. It is commented that Muggles generally dismiss anything they cannot explain. She has great affection for her pet pomeranian, Mr. Muggles. He married Catherine, eldest daughter of Kane William Horneck and his wife Hannah Muggles.