Khosatral Khel (The Ancient from the Abyss) is a fictional entity created by Robert E. Howard for his short story "The Devil in Iron". The character also appears in the adaptation by Marvel Comics, which was published in Savage Sword of Conan #15.
According to some accounts, Khosatral Khel is the spawn of Dagon. (EXP: Official Handbook of the Marvel Universe A to Z Vol 1 3)
Background[]
Khosatral Khel was an extra-dimensional entity that originated from the abyss and darkness, and entered the physical universe. Human flesh was incapable of holding its lifeforce therefore it used matter to create itself a body, a blasphemous form. For millennia, it traveled across the world as humans ineffectually attacked him. It eventually found the primitives living on the island of Dagonia. He brought them civilization and with his assistance they built the city of Dagonia. Human sacrifices were offered to him by the priests.
Some time later, their was a slave rebellion led by a priest armed with a knife that was forged from a meteor, which negated Khosatral Khel's magic, and when stabbed by it, became immobile and senseless. The slaves slaughtered the Dagonians and took over the city. A fisherman would years later remove the knife from Khosatral Khel, reviving him. Using necromancy it restored the city and its inhabitants. Later it would encounter Conan which killed it, using the magical dagger.