chaos (sonic)

A character from the Sonic the Hedgehog series, known as the God of Destruction. He is a liquid entity with long, extendible limbs and a brain visible through his head.
Chaos was the first known protector of the Master Emerald, thousands of years before Knuckles the Echidna.
In his first appearance in Sonic Adventure, Sonic and his friends must fight Chaos multiple times as he grows in size and power after consuming Chaos Emeralds while temporarily under Dr. Eggman's control.