A Great Old One is a type of fictional deity in the Cthulhu Mythos of H.P. Lovecraft. Collectively, the Great Old Ones (sometimes referred to as the Old Ones by some authors or the Cthulhu Cycle Deities by Brian Lumley in hisTitus Crow stories) are not as powerful as the Outer Gods, nor do they have as much influence. Nonetheless, they are served by devoted congregationsof worshipers, made up of both human and non-human cults.
Aphoom-Zhah The Cold Flame, Lord of the Pole Appears as a vast, cold, grey flame.
Arwassa The Silent Shouter on the Hill A vast, wailing, floating monstrosity.
Atlach-Nacha The Spider God, Spinner in Darkness A giant spider with a human-like face.
Baoht Z’uqqa-Mogg The Bringer of Pestilence A huge, flying, scorpion-like beast.
Basatan Master of the Crabs
Bokrug The Great Water Lizard, The Doom of Sarnath Appears as a giant lizard.
Bugg-Shash The Black One, The Filler of Space, He Who Comes in the DarkAppears as a slimy mass covered with eyes and mouths.
Byatis The Berkeley Toad, The Serpent-Bearded Appears as a gigantic, spider-like crab with a proboscis.
Chaugnar Faugn Horror from the Hills, The Feeder, Derzh-Hophazh Caug-Narfagn An elephant-headed humanoid.
Cthugha The Living Flame, The Burning One Appears as a living ball of fire.
Cthulhu The Sleeping God, Master of R’lyeh, Kthulhut, Tulu A gigantic, octopus-headed humanoid.
Cthylla Secret Seed of Cthulhu Appears as a huge, octopus-like creature. Daughter of Cthulhu.
Cxaxukluth — Probably appears similar to Azathoth.
Cyäegha The Destroying Eye, The Waiting Dark Appears as a gigantic eye covered with tentacles.
Cynothoglys The Mortician God Appears as a shapeless, mutating entity with a single arm.
The Dweller in the Gulf Eidolon of the Blind Appears as a huge, eyeless tortoise with whip-like tails.
Eihort The Pale Beast, God of the Labyrinth Appears as a huge, pallid, gelatinous oval with a myriad legs and multiple eyes.
Father Dagon and Mother Hydra Both appear as abnormally large Deep Ones.
Ghadamon A Seed of Azathoth A shapeless, inky, protoplasmic mass.
Ghatanothoa The Usurper, God of the Volcano Amorphous with multifarious appendages and grotesque members; too horrid to behold, viewing causespetrification.
Glaaki The Inhabitant of the Lake, Lord of Dead Dreams Appears as a giant slug with metallic spines.
Gloon The Corrupter of Flesh, Master of the Temple Manifests through a Dionysian sculpture; resembles a monstrous sea slug.
Gol-Goroth The Forgotten Old One, God of the Black Stone Appears as a gigantic, black, toad-like creature with an impossibly malevolent glare.
Hastur The Unspeakable, He Who is Not to be Named, Lord of Interstellar Spaces “True” form remains a mystery; said to be amorphous, possibly octopoid.
Huitloxopetl Haunter of Dreams, The Nightmare Walker
Hzioulquoigmnzhah — Has spheroid body, elongated arms, short legs, and a pendulum-like head dangling underneath.
Iod The Shining Hunter A levitating, sinuous, glowing creature.
Ithaqua The Wind Walker, The Wendigo, God of the Cold White Silence A horrifying frozen giant.
Juk-Shabb God of Yekub Appears as a great ball of energy.
Lloigor See Zhar and Lloigor below.
M’nagalah The Great God Cancer, The All-Consuming A massive, tumorousthing. TU
Mnomquah Lord of the Black Lake A very large and eyeless lizard-creature with a “crown” of feelers.
Mordiggian The Charnel God, The Great Ghoul, Lord of Zul-Bha-Sair A horrifying giant with eyeless head and limbless body, much like a worm.
Nug and Yeb The Twin Blasphemies Appear similar to Shub-Niggurath.
Nyogtha The Thing which Should Not Be, Haunter of the Red Abyss Appears as an inky shadow.
Oorn Appears as a huge, tentacled mollusc.
Othuum Deep Slumberer in Green, Great Master of Those-Who-Wait-WithoutBlack, cyclops-like demon with two pairs of legs.
Othuyeg The Doom-Walker Appears as a great, tentacled eye (similar to Cyäegha).
Quachil Uttaus Treader of the Dust Appears as a miniature, wrinkled mummywith ankylosed, outstretched claws.
Q’yth-az A crystalline entity.
Rhan-Tegoth He of the Ivory Throne A tall humanoid with crab-like appendages; hard to describe in a few words.
Rlim Shaikorth The White Worm A gigantic, whitish worm with a huge mawand eyes made of dripping globules of blood.
Saa’itii The Hogge A giant, spectral hog.
Shterot Separate, living tentacles.
Shudde M’ell The Burrower Beneath, The Great Chthonian Appears as a colossal worm with anterior tentacles.
Summanus A mouthless, grotesque human.
Tsathoggua The Sleeper of N’kai, The Toad-God, Zhothaqqua, Sadagowah Appears as a huge, furry, almost humanoid toad.
Vulthoom The Sleeper of Ravermos, Gsarthotegga May appear as a monstrous plant with an enormous, elf-like blossom.
The Worm that Gnaws in the Night Doom of Shaggai A massive, worm-like fiend.
X’chll’at-aa Lord of the Great Old Ones, The Unborn God, Enemy of All That Live
Y’golonac The Defiler Appears as a naked, headless human with a mouth in the palm of each hand; other features are nebulous.
Yhoundeh The Elk Goddess Perhaps an elk-like humanoid.
Yibb-Tstll The Patient One, The Watcher in the Glade Gigantic, bat-winged humanoid with detached eyes; truly horrible to behold.
Yig Father of Serpents A scaly, serpent-like humanoid.
Ythogtha The Thing in the Pit Appears as a colossal, cyclops-like Deep One.
Zhar and Lloigor The Twin Obscenities Both appear as a colossal mass of tentacles (have a rumoured triplet).
Zoth-Ommog Dweller in the Deeps A gigantic entity with a cone-shaped body, a reptilian head, and starfish-like arms.
Zushakon Dark Silent One, Old Night, Zul-Che-Quon Appears as a swirling, black vortex.
Zvilpoggua Feaster from the Stars, The Sky-Devil, Ossadagowah Winged, tentacle-faced, toad-like giant.
Zstylzhemgni Matriarch of Swarms, Zystulzhemgni