Yig (the "Father of Serpents", "Dionin") is a deity in H.P. Lovecraft's Cthulhu mythos.Yig first appeared in the story The Curse of Yig, which was created by Zealia Bishop and almost completely rewritten by Lovecraft.
Yig appears in many forms, as a serpent man, serpent with bat-like wings, or as a giant snake. Yig and his servants often have small pale cycle shaped markings on their bodies.
Yig most often appears when his snake children are disturbed by humans. He is easily angered and has been known to curse humans who kill snakes.
Because of his connection to Earth's snakes Yig has become a subject of many world wide religions.
Native Americans regard Yig as "bad medicine" and give him and his snake children a wide berth. 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. During the Thurian Age of Earth's prehistory Yig was worshiped as the Great Serpent by the Serpent Men of Valusia. During the Hyborian Age Yig was worshipped by certain cults as Set (later identified as the Egyptian god Set).
Curse of Yig
Those who upset Yig need fear his wrath. Yig will most often curse his enemies by transforming them into half snake monstrosities, but he can also impregnate women with half snake babies, cause humans to believe they are snakes, and simply kill.
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. Yig also appears in an often-used version of GWAR's logo, as well as appearing on-stage as a monster the band battles. 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 also 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 board game, appearing alongside Great Old Ones such as Cthulhu and Nyarlathotep.
Yig appears as a deity in Green Ronin's role-playing game Mutants and Masterminds, along side references to The King in Yellow, as described in the Book of Magic sourcebook. the book gives three spells that can be invoked in his name, one of which is called The Curse of Yig (mimicking the title of Bishop/Lovecraft's novel), which conjures snakes depending on the character's magic rank. The magic item, The Serpent Scepter, may also be linked to Yig, but the sourcebook doesn't explicitly describe this.