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- Warlock (Julian Sands, Warlock)
- Wormwood (C.S. Lewis, The Screwtape Letters)
- The Witches (Roald Dahl's The Witches)
- Withengar (Magic: the Gathering)
- The Wendigo, (Stephen King's Pet Sematary)
- Wu Tang, (Erotic Ghost Story)
- WxrtHltl-jwlpklz, (Terry Pratchett, Wyrd Sisters)
Read more about this topic: List Of Fictional Demons