Sapience level Sapient
Average height 6-8 ft. (presumed)
Population status Endangered

More Cthulhu Mythos species

Cthulhi, also known as the Star-spawn of Cthulhu, are a sapient species that have a similar appearance to the Great Old One Cthulhu, but are of far smaller size.


Relatively little is known about the Cthulhi other than that they arrived on Earth with Cthulhu, and are his underlings. After coming to Earth, the star-spawn built a great basalt city called R'lyeh on an island in the Pacific Ocean. Murals and sculptures preserved beneath alien ruins in the Antarctic record a war they waged against the Elder Things after arriving on Earth, but thereafter established a treaty.

This treaty gave the Cthulhi dominion over the most of Earth's landmasses, while the Elder Things would largely retreat to the seas, although they still occupied settlements like those found in Antartica. After that a massive cataclysm sank R'lyeh to the bottom of the sea, along with the Cthulhi and Cthulhu. A few are rumored to have escaped this incident, and can be found in hidden places on Earth.

Cthulhi are said to be composed of non-ordinary matter, and can alter their bodies' structure at will.