Nov 19, · Depends which 'Chao Key Glitch' you mean. There is a Chao Key Glitch which involves collecting the Chao Key whilst it's off-camera which corrupts the game's progression flags somehow, causing you to replay the same stage whilst actually moving forward in the storyline. Chao (Sonic) Jump to navigation Jump to search. Chao (/ˈtʃaʊ/; Japanese: チャオ) are fictional life forms in the Sonic the Hedgehog video game series published by Sega. They are small, childlike creatures that go through a complex life cycle and exist in several visual forms depending on how they are realtime-windowsserver.com game: Sonic Adventure (). The Chao Key resembles a normal key, albeit blue and the top resembles a neutral Chao head, complete with a yellow ball. In the center of the "head" is a small image of a Neutral Chao's face. In the center of the "head" is a small image of a Neutral Chao's face.