- "Oozing and surging up out of that yawning trap-door in the Cyclopean crypt I had glimpsed such an unbelievable behemothic monstrosity that I could not doubt the power of its original to kill with its mere sight. Even now I cannot begin to suggest it with any words at my command. I might call it gigantic—tentacled—proboscidian—octopus-eyed—semi-amorphous—plastic—partly squamous and partly rugose—ugh! But nothing I could say could even adumbrate the loathsome, unholy, non-human, extra-galactic horror and hatefulness and unutterable evil of that forbidden spawn of black chaos and illimitable night. As I write these words the associated mental image causes me to lean back faint and nauseated."
- -H.P. Lovecraft & Hazel Heald, "Out Of the Aeons"
Ghatanothoa (The Dark God) is a Great Old One and the firstborn of Cthulhu spawned by Idh-yaa on the planet Xoth . It is a huge, amorphous monstrosity, whose appearance is so hideous that anyone who gazes upon it (or even a perfect replica) is petrified into a living mummy. The victim is permanently immobilized, the body taking on the consistency of leather and the internal organs and brain preserved indefinitely, yet remains fully aware. Only the destruction of the subject's brain can free it from its hellish prison, though the unfortunate is likely to be incurably insane long before the welcomed release.
Ghatanothoa is currently trapped underneath Mount Yaddith-Gho in sunken Mu, where it was worshipped by the lloigor and later by Mankind (the Kthatans). Leader of the lloigor (race). He was brought to Earth from the planet Yuggoth by an ancient, alien race, possibly the Mi-go, who built a colossal fortress atop Yaddith-Gho and sealed Ghatanothoa inside the mountain beneath a large trapdoor. Ghatanothoa was worshipped by the ancient Muvians, who both feared and respected him because of his ability to turn any humans that beheld him into living, thinking mummies.