Chaos 2 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 two Super Emeralds.
Chaos 2 is much taller and muscular than Chaos 0. It has wider shoulders, larger hands and more muscle-toned limbs.
While fighting Sonic and Knuckles, Chaos absorbed both the emeralds Knuckles, transforming it into Chaos 2. Soon after, Dr. Eggman feed Chaos 2 two pieces of the Master Emerald, transforming it into Chaos 4.