# List of Great Old Ones

This is a compendium of the lesser known Great Old Ones of the Cthulhu Mythos of H. P. Lovecraft.
| Contents: | Overview |
| Contents: | A B C D E M N O Q R S T U V W Y Z |
| Contents: | References—Notes—External links |

## Overview

Great Old Ones :
| Name | Epithet(s), other name(s) | Description |
| Abholos | Devourer in the Mist | A grey festering blob of infinite malevolence, described as the lesser brother of Tsathoggua or spawn of Cthulhu, born from his bile and tears. |
| Alala | Herald of S'glhuo | An entity of living sound native to the Gulf of S'glhuo, and manifesting as a huge monstrous being. He is served by the Denizens of S'glhuo, which are made of his same substance. |
| Ammutseba | Devourer of Stars | A dark cloudy mass, with tentacles, absorbing falling stars. |
| Amon-Gorloth | Creator of the Nile and Universe's Equilibrium | A gigantic mysterious entity whose cult is perhaps coincident with that of Egyptian God Amun. Once dwelling in a gigantic palace known as Gz-eh near the Valley of the Kings, his dreaming force was able to shape reality, causing life to eventually flourish within the Nile Valley, over 3,000 years ago, before the stars ceased to be right, and the advancing desert entombed his titanic body beneath the sands. Priests of his cult have built up secret subterranean mausoleums to access the Great Old One's body, and please the slumbering god by giving cattle as sacrificial victims. |
| Aphoom-Zhah | The Cold Flame, Lord of the Pole | Appears much like Cthugha, but grey and cold. |
| Apocolothoth | The Moon God | Lunar entity that dwells in the Dimension of Enno-Lunn. |
| Arwassa | The Silent Shouter on the Hill | A humanoid-torso with tentacles instead of limbs, and a short neck ending in a toothless, featureless mouth. |
| Atlach-Nacha | The Spider God, Spinner in Darkness | A giant spider with a human-like face. |
| Ayi'ig | The Serpent Goddess, Aeg, Aega | Daughter of both Yig and the Outer Goddess Yidhra, appearing as a gigantic octopus-like horror with serpentine eyes, and detachable tentacles, which may move independently. She dwells within the cavern of a deep canyon somewhere in Texas. |
| Aylith | The Widow in the Woods, The Many-Mother | A tall, shadowy humanoid figure with yellow glowing eyes, and strange protrusions like the branches of dead trees. She is a servant of Shub-Niggurath. |
| Baoht Z'uqqa-Mogg | The Bringer of Pestilence | A huge, flying scorpion with an ant-like head. |
| Basatan | Master of the Crabs | Not described, possibly has fins and tentacles. |
| B'gnu-Thun | The Soul-Chilling Ice-God | Appears as a cyanotic humanoid, followed by an eerie blizzard. |
| Bokrug | The Great Water Lizard, The Doom of Sarnath | Appears as a gigantic water lizard. |
| Bugg-Shash | The Black One, The Filler of Space, He Who Comes in the Dark | Appears as a black slimy mass covered in eyes and mouths, much like a Shoggoth. |
| Byagoona | The Faceless Ones | Revered as a god of the dead and reanimated the deceased to sustain itself on their life force. Theorized to be an avatar of Nyarlathotep, though this is not confirmed. |
| Byatis | The Berkeley Toad, Serpent-Bearded Byatis | Appears as a gigantic multicolored toad with one eye, a proboscis, crab-like claws, and tentacles below the mouth. |
| Chaugnar Faugn | The Horror from the Hills, The Feeder, Caug-Narfagn | A vampiric elephant-like humanoid, with a mouth on the end of its trunk. |
| Coatlicue | Serpent Skirted One | Appears as a gigantic reptilian humanoid with two facing snakes in place of an actual head, as depicted in the Coatlicue statue. She was the former mate of Yig, revered in K'n-yan along with her consort. |
| The Colour | The Colour Out of Space | Appears as a mutagenic, glowing, foul-smelling mist or fluid that mutates all organisms around it while slowly consuming their life-force. |
| Coinchenn | — | A marine tentacled horror made of fish, whale, and octopus-like features. |
| Crom Cruach | Master of the Runes, Bloody Crooked One | Not described, but likely something gigantic and serpent or worm-like. |
| Cthaat | The Dark Water God | A formless mass of shape-shifting water. |
| Cthaeghya | — | (Half-)sister of Cthulhu, which spawned the Star-Spawn of Cthulhu. |
| Cthugha | The Living Flame, The Burning One | Appears as a living conflagration. |
| Cthulhu | Master of R'lyeh, The Great Dreamer | A massive hybrid of human, octopus, and dragon. He is usually depicted as being hundreds of meters tall, with webbed arms, tentacles, and a pair of rudimentary wings on his back. |
| Cthylla | Secret Daughter of Cthulhu | Appears as a huge winged octopus-like creature with six eyes. Youngest of Cthulhu and Idh-yaa's progeny. |
| Ctoggha | The Dream-Daemon | No description available. |
| Cyäegha | The Destroying Eye, The Waiting Dark | Appears as a gigantic black mass of tentacles, with a single green eye at the center. Nearly identical to Hermaeus Mora in the Elder Scrolls franchise. |
| Cynothoglys | The Mortician God, She Whose Hand Embalms | Appears as a formless mound, with one arm-like appendage. |
| Dhumin | The Burrower from the Bluff | A serpentine (likely Tremors-like) earth-shaking horror dwelling in the subsoil of Memphis, US. |
| Dygra | The Stone-Thing | A jewel-facetted, semi-crystalline geode with mineral tentacles. |
| Dythalla | Lord of Lizards | A gigantic saurian creature similar to Bokrug, but terrestrial, and endowed with a mane of tentacles. |
| Dzéwà | The White God | A ravenous plant-god who arrived from Xiclotl to Earth, awed by the Insects from Shaggai. He appears as a white orb hiding an enormous magenta excrescence, like an orchid or a lamprey-like mouth, with emerald tentacles, tipped with hands emerging from within the hideous mass. |
| Eihort | The Pale Beast, God of the Labyrinth | Appears as a huge, pallid, gelatinous oval with myriad legs and multiple eyes. |
| Ei'lor | The Star-Seed, The Plant-God | A plant-like parasitic horror native to the jungle planet Kr’llyand, which orbits a dead, green star. |
| Etepsed Egnis | — | A formless monstrosity with a huge, arm-like appendage. |
| Ghadamon | A Seed of Azathoth | A bluish-brown, slimy monstrosity riddled with holes, and an occasional malformed head. |
| Ghatanothoa | Lord of the Volcano, Thoa | Appears as a colossal horror with multifarious appendages, and Gorgon-like powers. |
| Ghisguth | The Sound of Deep Waters | A titanic mass of jelly-like material. |
| Gi-Hoveg | The Aether Anemone | A cosmic-entity manifesting as a gigantic, spongy, and fleshy mass covered in a myriad of both eyes and spines. He is said to be the nemesis of the Outer God Uvhash, usually summoned to contrast this deity. |
| Gla'aki | The Inhabitant of the Lake, Lord of Dead Dreams | Appears as a giant three-eyed slug with metallic spines, and tiny pyramid-like feet underneath. |
| Gleeth | The Blind God of the Moon | An eyeless and deaf Lunar deity worshiped in the ancient continent of Theem'dra, as well as in the Dreamlands, often mentioned as similar to Mnomquah, though apparently not related to each other. |
| Gloon | The Corrupter of Flesh, Master of the Temple, Glhuun | Usually manifests through a Dionysian sculpture, but its true form is that of a gigantic wattled slug-thing. |
| Gobogeg | The Twice-Invoked | Appears as a colossal pillar of amorphous alien flesh, with a cyclopean head. It drags up the continent it is summoned in, and causes the entire world to suddenly cave-in on itself. |
| God of the Red Flux | — | A vaporous red entity haunting the rainforest of Central Africa. It has the power to turn humans into zombie-like servants, the Tree-Men of M'bwa. |
| Gog-Hoor | Eater of the Insane | A gigantic entity dwelling in some reverse dimension, resembling a huge bullet with a long proboscis. |
| Gol-goroth | Golgoroth, The Forgotten Old One, God of the Black Stone, Golgoroð | Appears as a gigantic, black, toad-like creature with an impossibly malevolent glare, or a tentacled, scaled, bat-winged entity. |
| Golothess | — | An entity cut in ten pieces by Yig during a time of great battle (one of these pieces is an alabaster dish found in Egypt, dated back 1,300 BC). It resembles and has a similar domain as the Greek god Dionysus. |
| The Green God | The Horror Under Warrendown | A sentient plant-like entity dwelling within a series of caverns, where it is always served by mutant rabbit-like worshipers. |
| Groth-Golka | The Demon Bird-God, The Bird-God of Balsagoð | A monstrous bird-like fiend with sharp teeth, dwelling beneath Antarctica, vaguely resembling an extinct pterosaur. |
| Gtuhanai | The Destroyer God of the Aartnna | A destructive entity manifesting as a ravenous metallic vortex. He seems to be another half-brother of Cthulhu, like Hastur, and related to the slug-like Glaaki as well. He has also been called a "son of Yog-Sothoth". Whether these titles are literal or conceal some dark truth about the Destroyer, none can ascertain. He dwells somewhere in the Pleiades stellar region, and when summoned, he brings devastation. |
| Gurathnaka | Eater of Dreams, Shadow of the Night | A shadowy incorporeal entity dwelling in the Dreamlands. |
| Gur'la-ya | Lurker in the Doom-laden Shadows | A great shadow thing, with two glaring red eyes, able to transform the skull of its victims into green glowing stones carved with strange symbols. |
| Gwarloth | — | A tentacled amoebic horror with multiple eyes, orifices, and a dangling gland forming a hideous face. |
| Gzxtyos | Mate of Othuyeg | The consort of Othuyeg, likely similar to her bridegroom. |
| Han | The Dark One | A being made of cold, howling mist bound to Yig's worship. |
| Hastalÿk | The Contagion | A microbial entity, responsible for plagues. |
| Hastur | The Unspeakable, He Who is Not to be Named, Lord of Interstellar Spaces, The King in Yellow, The Peacock King, Zukala-Koth | His true form is unknown, but usually manifests either as a polypous, ravenous floating mass endowed with tentacles, drills, and suckers, or more frequently, as the King in Yellow, a humanoid being wearing tattered, yellow clothes and a mask hiding the face. He is said to be Cthulhu's (half-)brother. He is said to be of the air element opposed to Cthulhu's water element. |
| H'chtelegoth | The Great Tentacled God | A towering greenish trunk with a "crown" of tentacles, a row of multiple eyes, and a series of additional lateral grasping appendages. |
| Haiogh-Yai | The Outsider | A monstrous, amorphous, whirling entity living within a wandering black hole called Vix’ni-Aldru, which also hosts a city made of titanic blocks, inhabited by mysterious creatures resembling either worms or lizards. |
| Hnarqu | The Great One | Lesser brother of Cthulhu, manifesting as a gigantic mouth surrounded by countless tentacles, similar to a titanic sea anemone. |
| Hziulquoigmnzhah | The God of Cykranosh, Ziulquag-Manzah | Has a spheroid body, elongated arms, short legs, and a pendulum-like head dangling underneath. He is the brother of Ghisguth, and uncle of Tsathoggua. |
| Idh-yaa | Cthulhu's Mate, Xothic Matriarch | A gigantic, pale, worm-like horror dwelling beneath the crust of the star Xoth. She has been Cthulhu's first bride, and with him spawned three sons—Ghatanothoa, Ythogtha, and Zoth-Ommog—and a younger daughter, Cthylla. |
| Inpesca | The Sea Horror | A formless expansive bluish-black mass, haunting both the Ecuadorian and Peruvian coasts, mentioned in Cthäat Aquadingen as inimical to the Deep Ones. |
| Iod | The Shining Hunter | A levitating, sinuous glowing creature. |
| Istasha | Mistress of Darkness | A cat-like deity, similar to Bastet, but vicious and malignant. Her sister is the sylvan Lythalia. |
| Ithaqua | The Wind Walker, The Wendigo, God of the Cold White Silence | A gigantic, corpse-like human, with webbed feet and glowing red eyes. |
| Janai'ngo | Guardian and the Key of the Watery Gates, The Lobster of the Deep | A crustacean-like, tentacled, half-amorphous marine horror which serves Cthulhu, dwelling in the depths of the Bay of Rhiiklu, somewhere within the eastern coast of the United States. |
| Juk-Shabb | God of Yekub | Appears as a great shining ball of energy. |
| Kaalut | The Ravenous One | Likely a gigantic larva-like horror, dwelling in the nebulous realm of K'gil'mnon, along with the Gharoides, its parasitic insectoid servants. |
| Kag'Naru of the Air | — | Mentioned in the American comic book Challengers of the Unknown #81–87 (1977) as the sister of M'Nagalah. |
| Kassogtha | Bride of Cthulhu, The Leviathan of Diseases | A huge mass of coiled, writhing tentacles. She is Cthulhu's sister and mate, who bore him the twin daughters Nctosa and Nctolhu. |
| Kaunuzoth | The Great One, Cannoosut | A squat, sea cucumber-like monstrosity with five eyes, three-toed, taloned appendages, and a large mouth. He is described as one of Glaaki’s brethren, and dwells within the Moore Reservoir of Vermont, in the United States. |
| Khal'kru | All-in-All, Greater-than-Gods | A dark octopoid horror, similar to the Norse Kraken, but dwelling inside a temple somewhere within a hidden warm valley in Alaska. |
| Klosmiebhyx | — | Sister of Zstylzhemghi. |
| K'nar'st | Spawn of the Forgotten | An amphibious humanoid with four, seven-clawed arms, and tentacles in place of legs. The head is lion-like, but bony and his mouth encases three long tongues. He lies trapped beneath the seafloor, inside a mysterious seamount called Nayghof. |
| Krang | The Dead One | A monstrous, brown, leathery, alien entity native to a mysterious planet, currently slumbering within a gigantic mausoleum lost in the desert-wastes, set to guard a priceless treasure made up of the oldest decayed planets. |
| Kthaw'keth | The Supreme Unknown, Scourge of Yaksh | A six-eyed, crocodile-snouted monstrosity covered with both tentacles and tripod-like limbs. Revered by the ancient Egyptians as the deification of both darkness and chaos. |
| Kurpannga | The Devil-dingo | A giant hairless dingo-like fiend living in the Dreamlands (or the Dreamtime of Aboriginal myths). |
| Lam | The Grey | An alien entity, similar to Grey aliens, dwelling in the dark side of the planet Mars. |
| Lexur'iga-serr'roth | He Who Devours All in the Dark | A photophobic bat-winged monstrosity, with both a thousand-eyed misshapen head and huge maws. |
| Lythalia | The Forest-Goddess | A female seductive humanoid-entity, covered in both vines and vegetal parts. Somehow, she has been the mate of the Elder God Nodens, bearing him the twin gods Vorvadoss and Yaggdytha. The feline Istasha is the sister of Lythalia. |
| Mappo no Ryujin | Harbinger of Doom, Mappo's Dragon | A dragon-like entity, covered in pseudopods, regarded as the mother of the Snake-God Yig and said to be imprisoned beneath the sunken continent of Mu. |
| M'basui Gwandu | The River Abomination | A spider-eyed bat-winged horror lurking within the Congo River. |
| M'Nagalah | The Devourer, The Cancer God, The Eternal | A mass of both entrails and eyes, or a massive blob-thing. |
| Mnomquah | Lord of the Black Lake, The Monster in the Moon | A very large and eyeless lizard-like creature with a "crown" of feelers. |
| Mordiggian | The Charnel God, The Great Ghoul, Lord of Zul-Bha-Sair, Morddoth | A shape-shifting cloud of darkness. |
| Mormo | The Thousand-Faced Moon | Mormo appears in many forms, but three are most common: as a mocking vampiric maiden, as a tentacle-haired gorgon, or as a hunched toad-like albino with a mass of feelers instead of a face. This last form is the appearance of her servitors, the Moon-beasts. |
| Mortllgh | Storm of Steel | A lustrous orb floating at the center of a whirling vortex of razor-sharp, metallic-looking blades. |
| Mynoghra | She-Daemon of the Shadows | A succubus-like fiend with alien traits, and tentacles in place of hair. She is mentioned as a cousin of Nyarlathotep in the O’ Khymer Revelations, and worshiped by witch cults in Salem, Oregon. |
| Nctosa & Nctolhu | The Twin Spawn of Cthulhu | Twin daughters of Cthulhu, imprisoned in the Great Red Spot of the planet Jupiter. They both appear as huge shell-endowed beings, with eight segmented limbs, and six long arms ending with claws, vaguely resembling their "half-sister" Cthylla. |
| Ngirrth'lu | The Wolf-Thing, The Stalker in the Snows, He Who Hunts, Na-girt-a-lu | A ferocious and towering wolf-like humanoid with bat wings. He is served by werewolf servants known as the Lupine Ones. |
| Northot | The Forgotten God, The Thing That Should Not Be | A mysterious entity related to Yog-Sothoth, Shub-Niggurath, and possibly Azathoth as well which manifests either as a faun-like humanoid with color-changing hair, or as a glowing halo of unknown color. |
| Nssu-Ghahnb | The Heart of the Ages, Leech of the Aeons | A sort of gigantic pulsating heart secluded in a parallel dimensions. It is responsible for spawning all of the various monsters which exist within the known Universe. |
| Nug and Yeb | The Twin Blasphemies | Two horrid nebulous masses of shape-changing vapor from which eyes, tentacles, maws, and hooves emerge; somewhat like Shub-Niggurath. They have been spawned by Yog-Sothoth, and both (or either) are regarded as the blasphemous parents of Cthulhu. |
| Nyaghoggua | The Kraken Within | A blurry, dark, kraken-like entity mentioned in the Song of Yste, and said to dwell in Outer Space. |
| Nycrama | The Zombifying Essence | A tall larva-like monstrosity, with hundreds of segmented taloned tendrils, exiled by the Elder Gods into a parallel dimension, with close connections to the rainforests of South America, where he lures human victims to enslave from other dimensions. Formerly, he was too an Elder God. |
| Nyogtha | The Thing which Should Not Be, Haunter of the Red Abyss | Appears as an inky cloud of shadows. |
| Ob'mbu | The Shatterer | A giraffe-like reptilian monster. |
| Oorn | Mnomquah's Mate | Appears as a huge, tentacled mollusk. |
| Othuum | The Oceanic Horror | A twisting tentacled mass, with a single alien face somewhere in the center of the slimy squirming mass. |
| Othuyeg | The Doom-Walker | Appears as a great tentacled eye similar to Cyäegha, but much more similar to the monster featured in the horror movie The Crawling Eye. He currently dwells within the subsoil of Kansas, in the fabled Seven Cities of Gold. |
| Perse | — | A maddening, twisted-minded, alien entity appearing as a feminine figure in a red cloak, with three eyes, and an utterly alien face. Likely coincident with Classical Underworld goddess Persephone, she manifest aboard a ghost ship and contact traumatized humans, with hidden artistic talent, to spread both chaos and despair across the world. |
| Pharol | Pharol the Black | A black, fanged, cycloptic demon with arms like swaying serpents. The entity normally dwells in another dimension—a "seething and sub-dimensional chaos" beyond the mundane universe. The wizard Eibon of Hyperborea sometimes summoned Pharol to query him for arcane information. |
| Poseidon | — | A powerful extragalactic entity, awed by ‘Ymnar. It battled against the Elder God Paighon. |
| Psuchawrl | The Elder One | A tall humanoid with an eyeless sea anemone-like face, and a beaked grinning mouth, who can be summoned like a jinn. |
| Ptar-Axtlan | The Leopard That Stalks the Night | A mysterious entity related to zoomorphic shapeshifters, especially were-cats. |
| Quachil Uttaus | Treader of the Dust | Appears as a miniature, wrinkled mummy with stiff, outstretched claws. |
| Quyagen | The Eye of Z'ylsm, He Who Dwells Beneath Our Feet | Worshiped as a deity in a lost continent located in the southern Atlantic Ocean. He appears related to Nyarlathotep, and his form is likely octopoid, with myriads of horns along a maddening body. |
| Q'yth-az | The Crystalloid Intellect | A towering mass of crystals, residing on the lightless planet Mthura. |
| Raandaii-B'nk | — | A shark-like humanoid native to the Bermuda Triangle, possibly similar to Cthulhu's avatar the Father of All Sharks. |
| Ragnalla | Seeker in the Skies | A titanic raptorial fiend with a huge, single eye and a crown of tentacles. |
| Raphanasuan | The One from the Sun Race | A gigantic and likely multi-armed fiend. |
| Rhagorthua | Father of All Winds | A fiery entity similar to Cthugha, able to absorb nuclear radiation, and imprisoned somewhere within the subsoil of New Mexico. |
| Rhan-Tegoth | Terror of the Hominids, He of the Ivory Throne | A three-eyed, gilled, proboscidian monster with a globular torso, six, long sinuous limbs ending in black paws, with crab-like claws, and covered in what appears to be hair, but is actually tiny tentacles. |
| Rhogog | The Bearer of the Cup of the Blood of the Ancients | A black leafless oak tree, hot to the touch and with a single red eye at the center. |
| Rh'Thulla of the Wind | — | Mentioned in the American comic book Challengers of the Unknown #81–87 (1977) as the brother of M'Nagalah. |
| Rlim Shaikorth | The White Worm | A gigantic, whitish worm with a huge maw and hollow eyes made of dripping globules of blood. |
| Rokon | — | A mysterious extra-dimensional entity, regarded as the brother of Yig, ruling over a dimension called Zandanua. |
| Saaitii | The Hog | A gigantic, ghostly hog. |
| Scathach | — | One of Hziulquoigmnzhah's children, supposedly female. |
| Sebek | The Crocodile God | A crocodile-headed reptilian humanoid, equal to the Ancient Egyptian god Sobek. |
| Sedmelluq | The Great Manipulator, Ishmagon | A colossal glowing worm, with a starfish-shaped head, dwelling in Antarctica and served by the Mi-go. |
| Sfatlicllp | The Fallen Wisdom | The granddaughter of Tsathoggua, an amorphous mass which mated with a Hyperborean Voormi and spawned the legendary thief Knygathin Zhaum. In Chaosium's Dead Leaves Fall RPG supplement, she appears as a fiend with oily snakes skin, and prehensile dreadlocks like a Gorgon. |
| Shaklatal | The Eye of Wicked Sight | A dark-skinned humanoid horror with tentacles sprouting from his head, and glowing red eyes, worshiped by the earliest African civilizations as the god Amun. He is said to be rival of Cthulhu. |
| Shathak | Mistress of the Abyssal Slime, Death Reborn, Zishaik, Chushaik | Not described, likely an amorphous mass. |
| Shaurash-Ho | — | Mysterious entity mentioned in Howard Phillips Lovecraft's letter to James F. Morton as a descendant of Cthulhu which spawned other two horrid descendants (K'baa the Serpent and Ghoth the Burrower). The latter would have sired with a Roman noblewoman Viburnia the legendary ancestor of Lovecraft himself in a fictional family tree. The appearance of Shaurash-Ho has never been described. |
| Sheb-Teth | Devourer of Souls | An eyeless alien humanoid entity, massively overgrown with both strange flesh and machinery. |
| Shista | God of Fidelity | A shape-shifting entity, often manifesting as a spiny five-legged crab, with a spider-like head and metallic bracelets on each limb. |
| Shlithneth | — | A gigantic slimy worm, with a mass of black tentacles surrounding its maw. |
| Sho-Gath | The God in the Box, The Big Black Thing | A dark smoky column, with red malevolent eyes and a grotesque face, imprisoned inside a vintage box. |
| Shterot | The Tenebrous One | A starfish-like horror spawned by the Outer God C'thalpa. It has been cut into pieces, but individual fragments live independently. |
| Shudde M'ell | The Burrower Beneath, The Great Chthonian | Appears as a colossal worm with tentacles for a head. |
| Shuy-Nihl | The Devourer in the Earth | A dark blob of darkness endowed with tentacles. |
| Sthanee | The Lost One | A gigantic marine horror with twelve snaky-limbs, endowed with suckers, and a beard of tentacles, both served and revered by vicious merfolk, known as the "Children of Sthanee". |
| S'tya-Yg'Nalle | The Whiteness | An invisible entity made of both snow and chill, servitor of Ithaqua. |
| Summanus | Monarch of the Night, The Terror that Walketh in Darkness | A mouthless, grotesque humanoid with pale tentacles protruding from underneath a dark robe. |
| Swarog | — | A hideous being appearing as a dark, gigantic, legless bird-like horror swathed in dark flames, with its long neck topped by a black lump, half of which endowed with a big glowing eye and the other being covered in innumerable tentacles. It was revered by Slavic and Viking folks as the Solar god Svarog, though sharing almost nothing with the traditional deity. |
| Thanaroa | The Shining One | A mysterious evil entity, manifesting as a pillar of dazzling light, dwelling in the ruins of Nan Madol, near Ponape. Its name recalls that of Polynesian creator god Tangaroa. |
| Tharapithia | The Shadow in the Crimson Light | Slavic and Ugric God-like creature, photophobic and burrowing fiend awed in the Middle Ages. It cannot endure sunlight, and eludes it by tunneling deep underneath the roots of oak trees. |
| Thasaidon | Master of the Endless Void | A malignant entity manifesting as a mace-wielding armored warrior. He is revered as the Principle of Evil in Zothique, but his cult dates back to the time of Mu. |
| T'ith | – | The offspring of Cthulhu and the Elder God Sk'tai. |
| Thog | The Demon-God of Xuthal | An octopoid monster of Hyborian Age, which haunts the underground city of Xuthal. |
| Toth | − | A colossal, burrowing arthropod-like horror. |
| Th'rygh | The God-Beast | A monstrous entity manifesting as a horrible patchwork of flesh, soil, and alien matter. |
| Tsathoggua | The Sleeper of N'kai, The Toad-God, Zhothaqqua, Sadagowah | Appears as a huge, furry, almost humanoid toad, or a bat-like sloth. |
| Tulushuggua | The Watery Dweller Beneath | A mysterious subterranean horror, dwelling deep within the flooded caves of Florida, served by the eel-like horrors known as the Tulush. |
| Turua | Father of the Swamps, The Bayou Plant God | A fungine entity with both tentacles and tendrils, which haunts the swamplands of Florida, somehow similar to The Green God. |
| The Unimaginable Horror | The Great Color, The Sleeper in Water | A gigantic version of The Colour from Space imprisoned in Earth's oceans by Cthulhu's people. |
| Uitzilcapac | Lord of Pain | A sadistic entity trapped by the Elder Gods in a remote dimension of the Space-Time continuum, and appearing as a 4-m tall lizard-like horror with six legs, and a mouth filled with vicious fangs. |
| Ut'Ulls-Hr'Her | The Great Horned Mother, Black Glory of Creation | A huge faceless creature with various appendages sprouting from its head, a beard of oozing horns, many reddish teats, and fish-like fins sprouting from an egg-shaped body. |
| Vhuzompha | Mother and Father to All Marine Life, The Hermaphroditic God | An amorphous monster of prodigious size, covered in a multitude of eyes, mouths, projections, and both male and female genitalia. |
| Vibur | The Thing from Beyond | A huge, furry, and rapidly shifting entity casting radioactive stones. |
| Vile-Oct | — | A dragon-like or reptilian entity said to be familiar of Yig. |
| Volgna-Gath | Keeper of Secrets | A slimy shape-shifting mass, which can be summoned with mud and the blood of the invoker. |
| Voltiyig | Yig's Terrifying Son | Spawn of the Snake-God Yig, appearing as a winged and feathered serpent with flaming nostrils, somehow similar to the Aztec God Quetzalcoatl, trapped inside a dark tower topped with a giant five-pointed star. |
| Vthyarilops | The Starfish God | A tentacled horror similar to a Sun Star, but endowed with branching tentacles, spines, myriads of blue glaring eyes, and gaping-maws. |
| Vulthoom | The Sleeper of Ravermos, Gsarthotegga | May appear as a huge, unearthly plant. |
| The Worm that Gnaws in the Night | Doom of Shaggai | A massive worm-like fiend similar to a Graboid from Tremors. |
| Xalafu | The Dread One | A titanic, globular mass of various dark colors, endowed with a huge single-eye in the middle of the alien bulk. |
| Xcthol | The Goat God | A sadistic, mind-controlling, faun-like humanoid, likely related to Shub-Niggurath. |
| Xinlurgash | The Ever-Consuming | A bristly-mass with large gaping maws, made up with tentacles and spider-like limbs. |
| Xirdneth | Maker of Illusions, Lord of Unreality | An illusion-making entity with no true form. |
| Xitalu | Being of Higher Dimension | A tentacled, multi-eyed, soul-devouring abomination which dwells between dimensions. |
| Xoxiigghua | — | A three-eyed, octopoid, and parasitic horror trapped inside a Central American mountain range. |
| Yamath | Yama | Worshiped in ancient Lemuria. Aspect of the Triple God of Chaos. Known as Yama, king of demons, in Tibet. |
| Yegg-Ha | The Faceless One | A 10-foot tall winged being which rules over the Nightgaunts, before being defeated in ancient Britain by a centuria of Roman soldiers. |
| Y'golonac | The Defiler | Appears as a naked, obese, headless humanoid with a mouth in the palm of each hand; other features are nebulous. |
| Yhagni | — | A hideous female or hermaphroditic entity of tremendous power, cousin of Cthulhu and Hastur, imprisoned by the Great Old Ones being themselves aware of her powers. She dwells within the "Temple of Pillars," in the depths of Kyartholm located somewhere in the Northern Hemisphere. Her appearance is never described, but likely formless, larva-like, and tentacled as depicted in the minion-spawn which serve her parasitizing human victims. |
| Yhashtur | The Worm-God of the Lords of Thule | A worm-like monster dwelling at Northern Polar latitudes, said to be the rival or inimical to Nyarlathotep. |
| Yig | Father of Serpents | A giant snake with human-like arms covered in scales. Son of the Mappo's Dragon, children of his are Ayi'ig and Voltiyig, whereas Rokon is regarded as the brother of Yig. |
| Y'lla | Master of the Seas | A monstrous, barrel-shaped sea worm with tentacles and a lamprey-like mouth. |
| 'Ymnar | The Dark Stalker | A shape-shifting entity spawned by the Outer God Ngyr-Korath to serve him only. It may grant great powers to whoever chooses to serve him and his master, but his final aim is the destruction of all sentient and intelligent life in the Cosmos. |
| Yog-Sapha | The Dweller of the Depths, Lord of the Things Which Dwell Beneath the Surface | A gigantic, amoebic, glowing, and multihued gelatinous mass living within the dark depths of Earth. |
| Yorith | The Oldest Dreamer | A huge crystalline-being residing in the seas of the ocean planet Yilla. Its hypnotic abilities force those spacefarers, who stray too closely, to suddenly plunge into the depths of its lethal sea. |
| Ysbaddaden | Chief of the Giants | One of Hziulquoigmnzhah's children, supposedly male and gigantic. |
| Ythogtha | The Thing in the Pit | Appears as a colossal Deep One, with tentacles surrounding its one eye. |
| Yug-Siturath | The All-Consuming Fog | A vampiric vaporous entity which adsorbs vital forces. |
| Zathog | The Black Lord of Whirling Vortices | A festering, bubbling mass that constantly churns and whirls, putting forth vestigial appendages and reabsorbing them. Bubbles burst on the surface to reveal hate-filled eyes, and slobbering mouths form or close randomly about his horrible body. He dwells in the Xentilx galaxy, served by the Zarrian aliens. |
| Zhar and Lloigor | The Twin Obscenities | Both appear as a colossal mass of tentacles, trapped inside the "Plateau of Sung," somewhere in Myanmar. |
| Zindarak | The Fiery Messenger | A mysterious fiery entity, that shall release Cthulhu from his prison once the stars are right. |
| Zoth-Ommog | The Dweller in the Depths | A gigantic entity with a cone-shaped body, a reptilian head, a beard of tentacles, and starfish-like arms. |
| Zstylzhemghi | Matriarch of Swarms, Zystulzhemgni | Spawn of the Outer God Ycnàgnnisssz, described as a living alien swarm. She also has a sister named Klosmiebhyx. |
| Zushakon | Dark Silent One, Old Night, Zul-Che-Quon, Zuchequon | Appears as a swirling, black vortex, revered by the Mutsune Native Americans as a dire death god. He is also worshiped by mysterious servitors known as the Hidden Ones. |
| Z'toggua | — | An obese bat-winged humanoid with a long polypous snout and a wide mouth, opening in the belly, served by the Deep Ones. |
| Zvilpogghua | Feaster from the Stars, The Sky-Devil, Ossadagowah | A bat-winged, armless toad with tentacles instead of a face. |
In Joseph S. Pulver's novel Nightmare's Disciple several new Great Old Ones and Elder Gods are named. The novel mentions D'numl Cthulhu's female cousin, T'ith and Xu'bea, The Teeth of the Dark Plains of Mwaalba. Miivls and Vn'Vulot, are said to have fought each other in southern Gondwanaland during the Cretaceous period, whereas Rynvyk, regarded as one of the mates of Cthulhu's sister Kassogtha, likely matches with Cthulhu itself or a similar entity. Kassogtha would have sired Rynvyk three sons (one named Ult) and Rynvyk himself currently rests in a crimson pool in the Hall of Tyryar (likely another name or dimension of R'lyeh), whose portal is located somewhere in Norway.

## A
### Aphoom-Zhah

Aphoom-Zhah (the Cold Flame) debuted in Lin Carter's short story "The Acolyte of the Flame" (1985)—although the being was first mentioned in an earlier tale by Carter, "The Horror in the Gallery" (1976). Aphoom-Zhah is also mentioned in Carter's "The Light from the Pole" (1980), a story Carter wrote from an early draft by Clark Ashton Smith. Smith later developed this draft into "The Coming of the White Worm" (1941).
Aphoom-Zhah is the progeny of Cthugha and is worshipped as the Lord of the Pole because he dwells, like Ithaqua, above the Arctic Circle. Aphoom-Zhah frequently visited Hyperborea during the last ice age. His legend is chronicled in the Pnakotic Manuscripts.
Aphoom-Zhah appears as a vast, cold, grey flame that freezes whatever it touches. The being came to Earth from the star Fomalhaut, briefly visiting the planet Yaksh (Neptune) before taking up residence in Mount Yarak, a legendary mountain atop the North Pole. When the Elder Gods tried to imprison him beneath the pole, Aphoom-Zhah erupted with such fury that he froze the lands around him. Aphoom-Zhah is believed to be responsible for the glaciation that eventually overwhelmed Hyperborea, Zobna, and Lomar.
Aphoom-Zhah likely spawned Gnoph-Keh, Rhan-Tegoth, and Voorm. Though no human cult worships this being, Aphoom-Zhah is revered by the Gnophkeh, the Voormi, and his own race of minions; the spectral Ylidheem.

### Atlach-Nacha

In Clark Ashton Smith's short story The Seven Geases (1934), Atlach-Nacha is the reluctant recipient of a human sacrifice given to it by the toad-god Tsathoggua.
Atlach-Nacha resembles a huge spider with an almost-human face. It dwells within a huge cavern deep beneath Mount Voormithadreth, a mountain in the now vanished kingdom of Hyperborea in the Arctic. There it spins a gigantic web, bridging a massive chasm between the Dreamlands and the waking world. Some believe that when the web is complete, the end of the world will come, because it will create a permanent junction with the Dreamlands, allowing monsters to move freely into the waking world.
Atlach-Nacha probably came to Earth from the planet Cykranosh (Saturn) with Tsathoggua. Because of its appearance, Atlach-Nacha is often referred to as the Spider-God(dess) and is believed to be the regent of all spiders. Furthermore, the giant, bloated purple spiders of Leng are thought to be its children and servitors.
There is a disagreement about its gender. In Smith's original story, Atlach-Nacha is referred to as a male, but in later stories by other authors, it is implied to be a female.

## B
### Basatan

Basatan is a sea-god, also known as the Master of the Crabs. This deity possesses a ring with supernatural powers, and may be associated with the constellation Cancer.

### Bokrug

Bokrug (The Great Water Lizard) first appeared in Lovecraft's short story "The Doom That Came to Sarnath" (1920). The being is also part of Lovecraft's Dream Cycle.
Bokrug is the god of the semi-amphibian Thuum'ha of Ib, in the land of Mnar. The deity slept beneath the calm waters of a lake which bordered both Ib and the city of Sarnath. When the humans of Sarnath cruelly slaughtered the populace of Ib and stole the god's idol, the deity was awakened. Each year thereafter, strange ripples disturbed the otherwise placid lake. On the one-thousandth anniversary of Ib's destruction, Bokrug rose up and destroyed Sarnath (so utterly that not even ruins remained). Afterwards, the Thuum'ha recolonized Ib and henceforth lived undisturbed.

## C
### Chaugnar Faugn

   Some were the figures of well-known myth — gorgons, chimaeras, dragons, cyclops, and all their shuddersome congeners. Others were drawn from darker and more furtively whispered cycles of subterranean legend — black, formless Tsathoggua, many-tentacled Cthulhu, proboscidian Chaugnar Faugn, and other rumoured blasphemies from forbidden books like the Necronomicon, the Book of Eibon, or the Unaussprechlichen Kulten of von Junzt. —H. P. Lovecraft, "The Horror in the Museum" (emphasis added)
Chaugnar Faugn (The Elephant God, The Horror from the Hills) was created by Frank Belknap Long and first appeared in his novel The Horror from the Hills (1931).
Chaugnar Faugn (or Chaugnar Faughn) appears as a horribly grotesque idol, made of an unknown element, combining the worst aspects of octopus, elephant, and human being. When Chaugnar Faugn hungers, he can move incredibly quickly for his size, and use his lamprey-like "trunk" to drain the blood from any organism he encounters.
Chaugnar Faugn came to Earth from another dimension eons ago, possibly in a form other than the one which he later assumed. Upon arriving, he found the dominant lifeforms to be only simple amphibians. From these creatures, he created the Miri Nigri to be his servitors. The Miri Nigri would later mate with early humans to produce hybrids that would eventually evolve into the horrid Tcho-Tcho people.

### Cthugha

Cthugha is a fictional deity in the Cthulhu Mythos genre of horror fiction, the creation of August Derleth. In Derleth's version of the Cthulhu Mythos, Cthugha is a Great Old One, an elemental spirit of fire opposed to the Elder Gods. Derleth set its homeworld as the star Fomalhaut, which had featured in Lovecraft's poetry. He first appeared in Derleth's short story "The House on Curwen Street" (1944). Cthugha resembles a giant ball of fire. He is served by the Flame Creatures of Cthugha. Fthaggua, regent of the fire vampires, may be his progeny. He has at least one other known progeny, the being known as Aphoom-Zhah.

### Cthylla

Cthylla (the Secret Daughter of Cthulhu) is a fictional character in the Cthulhu Mythos of H. P. Lovecraft. Cthylla was created by Brian Lumley, who originally mentioned her in his Titus Crow novel The Transition Of Titus Crow (1975), though he never actually described her. Tina L. Jens, however, depicted Cthylla as a gigantic winged-octopus in her short story "In His Daughter's Darkling Womb" (1997).

### Cynothoglys

Cynothoglys (The Mortician God) first appeared in Thomas Ligotti's short story "The Prodigy of Dreams" (1994). The being appears as a shapeless, multiform entity with a single arm used for catching those who summoned her, and bringing them a painless, ecstatic death. In ancient times, she once held a small cult in Italy, which paid her homage rather than worshiping her, since actual worship would be the same as summoning the god. They considered her to be no mere Cloacina, but the mortician of all creatures, even the gods themselves.

## D
### Dweller in the Gulf

The Dweller in the Gulf appears in a short story of the same name by Clark Ashton Smith, first published in 1932. The Dweller in the Gulf lives deep beneath the surface of the planet Mars, but may have originated elsewhere. It is worshipped exclusively by a blind, troglodyte sect of the Martian race, the Aihai, and can be ritually summoned by the stroking of its idol.
The Dweller resembles a massive, eyeless, soft-shelled tortoise, but has a triangular head and two whiplike tails. At the ends of its tails are two bell-shaped suckers used for the ceremonial—usually forced—removal of its discoverer's eyes, turning them into the deity's blind, mute servitors.

### Dagon
## E
### Eihort

Eihort (God of the Labyrinth) first appeared "in person" in Ramsey Campbell's short story "Before the Storm" (1980). However, the being was first mentioned in Campbell's "The Franklyn Paragraphs" (1973) and "Cold Print" (1969)
Eihort lives within a network of tunnels deep beneath the Severn Valley, in England. It appears as a "bloated blanched oval, supported on a myriad of fleshless legs" with eyes continuously forming in its gelatinous body. When it captures a human, it offers the captive a "bargain". If the captive refuses, Eihort rams the victim violently to death. If the captive accepts the offer, the horror implants its immature "brood" inside the victim's body. The brood will eventually mature, and kill their host. According to the Revelations of Gla'aki, after the fall of humanity, Eihort's brood will be born into light.
"Ei" and "Hort" are nouns of the modern German language, "Ei" meaning "egg" and "Hort" meaning "hoard".

## G
### Gloon

Gloon first appeared in H.P. Lovecraft's short story "The Temple" as a Dionysian statue. Whether Lovecraft intended the statue to be anything other than the centerpiece of a piece of weird fiction is debatable. In 2004, Chaosium released an expanded bestiary to the Mythos which included the entity of Gloon, attributing some non-canonical eldritch and limacine attributes to the entity, a counterpoint to its outwardly pleasing and homoerotic aesthetic. Author Molly Tanzer's novelette "The Infernal History of the Ivybridge Twins" expanded upon Gloon's cult and mythology.

## M
### Morrick

See Brian Lumley deities.

## N
### Nug and Yeb

Nug (The parent of Cthulhu) and Yeb, the Twin Blasphemies, are the spawn of Shub-Niggurath and Yog-Sothoth. Nug is the parent of Cthulhu and the parent of Kthanid via the influence of Yog-Sothoth. Nug is a god among ghouls, while Yeb is the leader of Abhoth's alien cult. Both Nug and Yeb closely resemble Shub-Niggurath.
The names Nug and Yeb are similar to the names of the Egyptian sibling gods Nut and Geb, members of the Heliopolitan Ennead.

### Nyogtha

Nyogtha (The Thing That Should Not Be) appears in Henry Kuttner's short story "The Salem Horror" (1937). According to the story, the Necronomicon refers to Nyogtha as "the Dweller in Darkness"—an epithet used by August Derleth in the story of the same name to refer to Nyarlathotep; thus, it may be that Nyogtha is yet another of Nyarlathotep's nigh-endless avatars. Nyogtha appears as a shapeless, dark mass.
In his short story "Path of Corruption," Steve Berman has a group of New Orleans-based hustlers worshipping Nyogtha.
In the 1965 horror film Dark Intruder Nyogtha is mentioned towards the end as part of an invocation uttered by Professor Malaki to various demons, along with Goetic demons such as Astaroth and Asmodeus.

## O
### Oorn

Oorn is mentioned in the book Mad Moon of Dreams (1987) by Brian Lumley. She is the wife of the reptilian Mnomquah. She has the form of a huge tentacled mollusk, with snaking appendages that can spew digestive fluid on things she wishes to eat. Like her husband, her only true worshippers are the Men of Leng and the Moon-beasts. A temple devoted to Oorn and Mnomquah is near Sarkomand in the Dreamlands.

## Q
### Quachil Uttaus

Quachil Uttaus can reduce all living tissue he comes into contact with to dust (and is therefore similar to another of Smith's characters, Ubbo-Sathla). Quachil Uttaus is usually associated with age, death, and decay. Summoning this god is considered lethal, if one even subconsciously entertains thoughts of suicide.

## R
### Rlim Shaikorth

Rlim Shaikorth appears as a huge whitish worm with a gaping maw, and eyes made of dripping globules of blood. One of Rlim Shaikorth's avatars is known as the White Worm and is part of Smith's Hyperborean cycle.
The White Worm travels on a gigantic iceberg called Yikilth, which it can guide across the ocean. In its colossal ice-citadel, the White Worm prowls the seas, blasting ships and inhabited land masses with extreme cold. Victims of the White Worm are frozen solid, their bodies appearing eerily white, and remain preternaturally cold—they will not melt nor warm even when exposed to fire. (The Coming of the White Worm, 1941)

### Rhan-Tegoth

A weakened, amphibious, chimaera-like being that crushed its victims and sucked their blood. Revived and worshipped by the mad wax artist George Rogers.

### Rhogog

The Bearer of the Cup of the Blood of the Ancients, taking the form of a black leafless oak tree, hot to the touch, that bears Cthulhu's blood.

## S
### Shudde M'ell

Shudde M'ell is a creation of Brian Lumley, featured in his novel The Burrowers Beneath (1974). It is "a great gray thing, a mile long, chanting and exuding strange acids... charging through the depths of the earth at a fantastic speed, in a dreadful fury... melting basaltic rocks like butter under a blowtorch." Shudde M'ell is the supreme regent of the chthonians, a horrifying race of burrowing creatures, and is probably the largest and most malignant member of his kind. According to some legends, he was once imprisoned beneath G'harne, but is now free to wander the earth with his kin.

### Summanus

Summanus (Lord of Hell, Monarch of the Night, The Terror that Walketh in Darkness) is the creation of Brian Lumley — who based the Great Old One on the Roman deity of the same name — and first appeared in Lumley's short story "What Dark God?" (1975). The god appears as a mouthless human with whitish tentacles hidden under his clothing. He can use these tentacles to siphon blood from his victims.
Summanus had a following in Roman times, but if he is worshiped today, his cult is even more secretive. The rites needed for the proper worship of Summanus are found in the Tuscan Rituals.

## U
### The Unimaginable Horror

The Unimaginable Horror appears in CT Phipps' Cthulhu Armageddon (2016) sequel The Tower of Zhaal (2017). It is a mammoth version of the creature from The Colour Out of Space that destroyed the Kastro'vaal civilization. It proceeded to arrive on Earth in primordial times before it was imprisoned in the oceans by Cthulhu's people. From there, it escaped and destroyed much of the Yitian civilization before being imprisoned again by a member of their race called Zhaal. The creature would remain imprisoned well after the rest of the Great Old Ones had arisen and only briefly escape before being restored to its imprisonment. It is written about in a book called The Unimaginable Horror that reveals details about the Tower of Zhaal and its origins.

## V
### Vulthoom

Vulthoom appears in the Clark Ashton Smith story of the same name, first published in the September 1935 issue of Weird Tales. The being is also known as Gsarthotegga and The Sleeper of Ravormos.
In the story, Vulthoom is the Martian Aihai's equivalent of Satan. Though most rational people believe him to be a myth, he is nonetheless greatly feared by the lower class. In truth he is a mysterious being, from another universe, exiled by his fellow inhabitants, and lying in wait on Mars in the underground city of Ravormos. He took over Mars in ages past and plans to conquer Earth as his next trophy. Because of his vast intellect, and advanced technology, he seems godlike, but is in reality merely a very powerful alien who must rest for millennia at a time. While under the influence of the hallucinogenic perfume of an alien blossom, one man envisioned Vulthoom as a gigantic otherworldly plant, but the being's true form is unknown.
The DC Comics character Power Ring is associated with an entity named Volthoom. An entity sharing this name, who may or may not be the same Volthoom, appears as a major villain in Geoff Johns' Green Lantern stories.

## W
### The Worm that Gnaws in the Night

The Worm that Gnaws in the Night (the Doom of Shaggai) appears in Lin Carter's short story "Shaggai" (1971). The being is portrayed as an enormous, worm-like entity. It was first observed by the wizard Eibon, who chanced upon it on a journey to the planet of Shaggai. To his amazement, Eibon discovered that the massive worm was the "Dweller in the Pyramid" mentioned by the demon Pharol, when questioned by Eibon (about a cryptic passage in the Pnakotic Manuscripts), and that once the Shan of Shaggai made the mistake of summoning it, they could not control or even send it back. Even the Elder Gods could not deal with it. The worm, to Eibon's horror, was slowly eating away at the vitals of Shaggai and he subsequently made a hasty return to Earth. Shaggai, however, eventually suffered a different fate from something that crawled over the edge of the universe, as related in Campbell's "The Insects from Shaggai".

## Y
### Yag-Kosha

Yag-Kosha is described as a telepathic being with an elephant head, from outer space and being the last survivor of a group of refugees.
Yag-Kosha appeared in the story "The Tower of the Elephant", from Robert Ervin Howard (the creator of "Kull" and "Conan, the Barbarian"). The Tower of the Elephant was best known for being portrayed in the comic book Conan the Barbarian#4.

### Yba'sokug

Yba'sokug is a great beast that is said to be come to devour the world, sending depravity before him in the form of his heralds. He is depicted as a froglike creature with a great multitude of eyes. Yba'sokug is worshiped fervently by "the lonely and the tired".

### Yibb-Tstll

Yibb-Tstll (The Drowner) is an obscure god, said to watch at the center of all time as the universe revolves. Because of this insight, only Yog-Sothoth is said to be wiser. Its blood, the Black, is a weapon which takes the form of black snowflakes that stick to and smother a victim. This is stated in The Caller of the Black. The god's touch causes an instant change in the person affected—this change is usually fatal but occasionally brings some benefit.
Yibb-Tstll is sometimes described as an immobile, dark, tentacled entity with a pulpy, alien head, detached eyes, and large bat wings under which countless Nightgaunts suck black milk from its innumerable breasts. In Brian Lumley's short story "Rising with Surtsey" (1971), the narrator proclaims: "... I wanted to bound, to float in my madness through eldritch depths of unhallowed black blood. I wanted to cling to the writhing breasts of Yibb-Tstll. Insane...". Yibb-Tstll makes its major appearance in The Horror at Oakdeene.
Having a close connection to the Great Old One Bugg-Shash, so should Yibb-Tstll be regarded as a Great Old One – specifically in the Drowners group introduced by Brian Lumley, parasitic alien entities which thrive by vampyrizing the Great Old Ones themselves – though in RPG materials she is classed as "Outer God".

### Yig

Yig (the Father of Serpents) first appeared in the story The Curse of Yig which was created by Zealia Bishop and almost completely rewritten by H. P. Lovecraft. He is a deity that appears as a serpent man, serpent with bat like wings, or as a giant snake. Although Yig is easy to anger, he is easy to please as well. Yig often sends his serpent minions, the children of Yig, to destroy or transform his enemies. He is associated with the Serpent Men.
To Native Americans, Yig is regarded as "bad medicine". He is also alluded to in western American folklore. He is identified with the Mesoamerican deity Quetzalcoatl, and may be a prototype for that god and other serpentine gods worldwide. Some authors identify him as the Stygian serpent god Set's father, and from Robert E. Howard's Conan stories, and also with the Great Serpent worshiped by the Serpent People of Valusia from Howard's Kull stories.
Yig is the subject of a song by the shock rock band GWAR entitled "Horror of Yig", which appears on their album Scumdogs of the Universe. The band The Darkest of the Hillside Thickets, famous for their Lovecraft references, also refers to Yig in a song titled "Yig Snake Daddy".
Yig is the name of a deity in the Arcanis Dungeons & Dragons campaign setting. Yig was once (and may still be) worshipped by the Ssethregorean Empire, a group dominated by various lizard and snake-like beings. Yig in this mythos is a female deity, but still strongly associated with serpents, suggesting the name is not a coincidence.
Despite being spoken of on only a few occasions in Lovecraft's work, Yig is one of the Ancient Ones included in the Arkham Horror boardgame, appearing alongside Ancients such as Cthulhu and Nyarlathotep, proving his popularity.

## Z
### Zathog

Zathog appears in Richard Tierney's novel The Winds of Zarr (1971), as well as in his short story "From Beyond the Stars" (1975). After warring with the Elder Gods, Zathog, eager for revenge, entered into a compact with the brutal Zarr. The Zarr controlled most of the galaxy where they dwelt, and desired to conquer the rest of the universe. In return for helping him free his brethren, Zathog promised to give the Zarr the ability to travel through time and space.

### Zushakon

Zushakon (or Zuchequon or Zul-Che-Quon) debuted in Henry Kuttner's short story "Bells of Horror" (1939). The being is the son of Ubbo-Sathla, procreated by binary fission. Other sources, however, consider him the progeny of Shub-Niggurath and Hastur.
Zushakon is the god of death to the Mutsun tribe of California. Zushakon has an intense hatred of light and will slay anyone who exposes one of his sacred artifacts to it. He can be summoned by the ringing of three specially consecrated bells. His arrival is heralded by the rapid darkening and chilling of the surrounding environment and the sound of flapping, as if produced by very large wings, steadily increasing in volume. Furthermore, all creatures nearby suffer an irritation of the eyes that is so severe, they are compelled to literally gouge them out. Upon his arrival, the surrounding shadows darken, thicken, swirl, and finally clot into his dreadful shape. It is not known whether the clot of darkness that forms is merely a gateway or the actual entity himself.
According to the famed occult detective Doctor Anton Zarnak, who witnessed Zushakon's arrival during an unsuccessful attempt to exorcise him from a client, Zushakon is an earth elemental, and can be repelled by bright lights or by summoning the fire god Cthugha. The victim, who died during the struggle, had dug up a mound that contained the remains of a Mutsun shaman. Inside, he found an obsidian tablet and a carving of a hooded, possibly winged, humanoid figure surrounded by toad-like beings prostrate in worship before it. Inscribed on the tablet was an ancient, now-extinct script promising death to anyone who exposed the contents of the barrow. It is likely that the winged figure in the carving is Zushakon himself.
After he departs, Zushakon may return yet again during the first earthquake or solar eclipse following an earlier, successful summoning of him.