Cthulhu Rules.

Cthulhu is a deity created by writer H. P. Lovecraft and first introduced in the short story "The Call of Cthulhu", published in the pulp magazine Weird Tales in 1928. Considered a Great Old One within the pantheon of Lovecraftian cosmic entities, the creature has since been featured in numerous popular culture references. Lovecraft depicts Cthulhu as a gigantic and wholly evil entity worshiped by cultists. Cthulhu's anatomy is described as part man, part dragon, and part octopus.

The H.P. Lovecraft Archive[hplovecraft.com]
Wikipedia page of H.P. Lovecraft[en.wikipedia.org]
Wikipedia page of Cthulhu[en.wikipedia.org]