
Cthulhu is a member of the Great Old Ones and the major antagonist in H.P Lovecraft's novel The Call of Cthulhu. The unofficial figurehead of Lovecraft's mythos, Cthulhu's very appearance would drive mortals into insanity. The version of him appearing in the South Park episode Coon vs. Coon and Friends plays a supporting role in the final round of the first part of Cartoon Villains War. The version of him from the short film Eldritch Code makes a minor appearance in Nonspecific Villains War.
Cartoon Villains War[]
Nonspecific Villains War[]
Becoming Ultron[]

Cthulhu fell to Earth and became a computer virus. A lab nearby was working on a robot to protect the world, when one of their scientists downloaded the virus, merging Cthulhu with the AI to become Ultron. The rest of the events undertaken by him will be placed on that page.