- The name has been adopted by Stephen King for a character with some similarities to The King In Yellow in his The Dark Tower series of novels. The Crimson King even has a symbol, a red eye, that has some similarity to The Yellow Sign. Dwells within the Dark Tower.
- A Crimson King sleeps below the unnamed city in The Old One & The Star Spawn and when it rises up, the moon will crack and release the Old One that dwells beneath it, ending the world.
- See the non-Mythos novel In The Courts of the Crimson Kings.
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