Chaos Control is Shadow the Hedgehog's signature ability in the Sonic the Hedgehog series, first shown when Shadow debuted in Sonic Adventure 2 in 2001. Using the power of a Chaos Emerald, he can stop time and teleport across short distances, usually in a burst of red energy. The sound has become closely linked to Shadow in later games, animation and fan edits, where it is used to mark his sudden entrances and escapes. Its popularity endures because it instantly identifies Shadow and adds a fast, powerful transition to gaming clips, memes and Sonic fan videos.