Howard Phillips Lovecraft (August 20, 1890 - March 15, 1937), was the original creator of the Cthulhu mythos. Other authors have also contributed. Many monsters in nethack variants are derived from the Cthulhu mythos, but none in Nethack it self.
Some monsters of the Cthulhu mythos
- Deep one, Deeper one and Deepest one
- Migo: Migo drone, Migo warrior and Migo queen
- Shoggoth and Giant shoggoth
- Star vampire
- Fire vampire