The Children of Yog-Sothoth are creatures created by Chaosium for the card game the Call of Cthulhu, in its expansion "Forgotten Cities". According to "What Grows Within" (supplement to the Pathfinder role-playing game), they are often tasked with preparing the world for raids from other dimensions or agents of the Outer Gods and Great Old Ones cults.
They are mortal creatures imbued with the essence of Yog-Sothoth, always male. They could almost pass for humans, but their nature is revealed by their scaly skin, tail ending in a suction cup-like mouth (with which it can drain an opponent's blood), animal legs and abdominal tentacles that function as sensory organs. Most of them can pass for a large member of a specific species if they wear clothing that hides the monstrous elements of their body. Another characteristic is the unpleasant odor that emanates from them, which can be increased to use as a weapon.
A Child of Yog-Sothoth is created through a blasphemous ritual in which a mortal creature (usually human although other humanoids and animals can serve and not necessarily female) is used as an incubator. The mother dies in childbirth and generally gives birth to twins, a Child of Yog-Sothoth and a Spawn of Yog-Sothoth.
Each of them has a fundamental knowledge of magic, but it does not mean a greater ability to use it. They are not born evil, but since almost everyone is raised by the cults that create them, that usually ends up being their nature. Besides Aklo, they can know the languages of the Mi-go and the Elder Things.
Instinctively, they are often hated by animals and psychopompos.
- They are based on Wilbur Whateley.