Cthulhu

Description
Cthulhu is a Great Old One. He appears as 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. He is the brother of Kthanid, the half-brother of Hastur and the father of Cthylla. He is one of the most powerful deities of the Great Old Ones and his cult has various cells all over the world.

As a Deity
Due to his immense power, Cthulhu is feared and loved by his cult. Leaders of said cults beg for the knowledge of the Great Sleeper, but he only grants them such knowledge to those he deems worthy, those who are able to wake him from his slumber. Cthulhu is said to grant boons of strength and knowledge on the occult to those who pledge to him, but weak minds or bodies would not able to tolerate such powers. The weak ones falter or collapse, those unable to understand his ancient wisdom go insane, shouting obscenities and incoherent words. But those who are able to withstand such powers will also get the interest of The Great Dreamer.

Religions and Cults
It is unknown how large the throng of those who worship the dreaded Cthulhu is, but his cults have many cells around the globe. The cult is noted for chanting its horrid phrase or ritual: "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn," which translates as "In his house at R'lyeh dead C'thulhu waits dreaming."