Chao, Sega Wiki

A Chao is an artificially intelligent, virtually generated lifeform from the Sonic the Hedgehog series. Their role in the games is to be raised by the player in mini-games, similar to Tamagotchi. Chao are somewhat complex, responding to stimuli; they have moods, they require food, and they can be loving or fearful. The word Chao is a pun on Chaos, a word commonly used in the Sonic series. Chao made their first appearance in Sonic Adventure for the Sega Dreamcast, later in Sonic Adventure 2, and

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