Chaos 6 is a transformation that appears in the Sonic the Hedgehog comic series and its spin offs published by Archie Comics. It is the form Chaos takes upon harnessing enough negative Chaos energy to equal about six Super Emeralds.
Chaos 6 takes the form of a massive blob of a monster with several tentacles and spider-like legs. It has seven emerald-colored eyes and a long scorpion-like tail.
While on the Egg Carrier, Dr. Eggman fed Chaos 4 two additional Super Emeralds, transforming it into Chaos 6. The beast then did battle against Sonic, Knuckles, and Big alongside Eggman and a horde of Ice-bots, but was defeated and had its Chaos energy-infused emeralds taken from it.