The Iok-Sothoth (イオグ＝ソトース Iogu-Sotōsu ) were the displaced spirits (まつろわぬ霊 matsurowanu rei ) that the supreme master of the Final Gods, Quasarmageddon Chaos collected from countless universes it destroyed and devoured.
In the Battle of the Hercules-Corona Borealis Great Wall, Quasarmageddon Chaos appeared as the final enemy of the entire universe, accompanied by trillions of Iok-Sothoth prepared for the fight. After Quasarmageddon was vanquished, all the Iok-Sothoth were erased along with it, never to become a threat again.
Iok-Sothoths have power that are akin to the Final Gods. They can manifest in the form of different Final Gods. As such, as shown in the final battle, the millions of multiple copies of Quasar Estes, Ygso'Gurath and others that fought the remaining living forces of the universe were just shells inhabited by the Iok-Sothoth.
- The term "Iok-Sothoth" comes from the name the Outer God Yog-Sothoth.