Cthulhu is a fictional cosmic entity created by horror author H. P. Lovecraft in 1926. The first appearance of the entity was in the short story "The Call of Cthulhu" published in Weird Tales in 1928.
Cthulhu is one of the central Great Old Ones of the Lovecraft Mythos. It is often cited for the extreme descriptions given of its hideous appearance, its gargantuan size, and the abject terror that it evokes. Cthulhu is often referred to in science fiction and fantasy circles as a tongue-in-cheek shorthand for extreme horror or evil.
After its first appearance in "The Call of Cthulhu", Cthulhu makes a few minor appearances in other Lovecraft stories. August Derleth, a correspondent of Lovecraft's, used the creature's name to identify the system of lore employed by Lovecraft and his literary successors, the Cthulhu Mythos.
Cthulhu has also been spelled as Tulu, Clulu, Clooloo, Cthulu, C'thulhu, Cighulu, Cathulu, Kathulu, Kutulu, Kthulhu, Q’thulu, K'tulu, Kthulhut, Kulhu, Kutunluu, Cuitiliú, Thu Thu, and in many other ways. It is often preceded by the epithet Great, Dead, or Dread.
Lovecraft transcribed the pronunciation of Cthulhu as "Khlûl'-hloo" Lovecraft gave several differing pronunciations on different occasions. According to Lovecraft, this is merely the closest that the human vocal apparatus can come to reproducing the syllables of an alien language. Long after Lovecraft's death, the pronunciation kə-THOO-loo became common, and the game Call of Cthulhu endorsed it. It has been written that the closest the human voice can come to pronouncing Cthulhu would be to say "Clulu" with one's tongue pressed against the roof of the mouth.
While the birthplace of Cthulhu is not definitively established, it is suggested that it is the planet Vhoorl, with his advent somehow connected with supernovae: "I learned whence Cthulhu first came, and why half the great temporary stars of history had flared forth." It is also suggested in both At the Mountains of Madness and “The Whisperer in Darkness” that Cthulhu is made up of some unknown and foreign matter.
The most detailed descriptions of Cthulhu appear in the short story "The Call of Cthulhu", and are based on the statues of the creature. One, constructed by an artist after a series of baleful dreams, is said to have "yielded simultaneous pictures of an octopus, a dragon, and a human caricature.... A pulpy, tentacled head surmounted a grotesque scaly body with rudimentary wings." Another, recovered by police from a raid on a murderous cult, "represented a monster of vaguely anthropoid outline, but with an octopus-like head whose face was a mass of feelers, a scaly, rubbery-looking body, prodigious claws on hind and fore feet, and long, narrow wings behind."
When the creature finally appears, the story says that the "thing cannot be described", but it is called "the green, sticky spawn of the stars", with "flabby claws" and an "awful squid-head with writhing feelers". The phrase "a mountain walked or stumbled" gives a sense of the creature's scale.
Cthulhu is depicted as having a worldwide doomsday cult centered in Arabia, with followers in regions as far-flung as Greenland and Louisiana. There are leaders of the cult "in the mountains of China" who are said to be immortal. Cthulhu is described by some of these cultists as the "great priest" of "the Great Old Ones who lived ages before there were any men, and who came to the young world out of the sky."
The cult is noted for chanting the phrase "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn", which translates as "In his house at R'lyeh, dead Cthulhu waits dreaming." This is often shortened to "Cthulhu fhtagn", which might possibly mean "Cthulhu waits", "Cthulhu dreams", or "Cthulhu waits dreaming."
~Another tribute being the Metallica song "Call of Cthulhu" and the parody "Prank Call of Cthulu" in the Grim Adventures of Billy and Mandy to name a few.
"Cathulu fhtagn, Cathulu waits..."
Subject: Cathulu 
