The Call of Cthulhu - Who is Cthulhu?

Well, Cthulhu sure is a pretty famous Lovecraft's invention so here is some explanation of were did it come and who is it.

"The Call of Cthulhu" is a short story by American writer H. P. Lovecraft. Written in the summer of 1926, it was first published in the pulp magazine Weird Tales, in February 1928. Cthulhu Mythos scholar Robert M. Price claims the irregular sonnet "The Kraken", written in 1830 by Alfred Tennyson, is a major inspiration for H.P. Lovecraft's story, as both reference a huge aquatic creature sleeping for an eternity at the bottom of the ocean and destined to emerge from his slumber in an apocalyptic age.

Cthulhu is a fictional cosmic entity who first appeared in the short story "The Call of Cthulhu", it us nearly a god in "Cthulhu mythos" and even there are cults that worship Cthulhu, pretty strange I think.