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The Chaos Chao[1] is a Chao that looks similar to Chaos and its genetic ancestors: the Ancients[2]. It is a form that Chao can achieve by giving a normal Chao special materials.
Creating a Chaos Chao is a long process. In order for a Chao to become a Chaos Chao, it needs to have reincarnated (or "transformed") at least twice. How the player raises the Chao in its previous lives has absolutely no impact on whether or not a Chao can become a Chaos Chao. After a Chao transforms for the second time, the player can give it at least one of every small animal in the game. The player can still feed it fruit, and should do so to keep their Chao happy. If all of the requirements are met, when the Chao evolves, it should come out of the cocoon as a Chaos Chao.
Chaos Chao have many unique traits. They are immortal, never reincarnating nor dying. Chaos Drives and small animals do not affect the appearance of Chaos Chao, though they can still come in different colors. Chaos Chao also cannot mate. Though their behavior remains the same before they transformed, they can no longer change their facial expressions with the exception of falling asleep and having their nap interrupted and are still able to blink.
A Neutral Chao will evolve into a Light Chaos, a Dark Chao will evolve into a Dark Chaos and a Hero Chao will evolve into Hero Chaos. These Chao have an ominous, organ-like jingle when they transform.
Contrary to popular belief, giving a Chaos Drives or extra small animals does not prevent the Chao from becoming a Chaos Chao. This, however, should not be abused, as a Chao must still evolve into a Normal Type (in other words, the Chao must have used the small animals/Chaos Drives in balanced matter: ten red Chaos Drives, ten purple, etc.).
Game appearances[]
Sonic Adventure 2[]
Chaos Chao made their first appearance in Sonic Adventure 2 and its enhanced port, Sonic Adventure 2: Battle, as a form that the player can raise a Chao towards. There are three different Chaos Chao in the game, which are neutral, hero, and dark. Each one of these has a distinct appearance, with the neutral Chaos Chao resembling Chaos and the Ancients, while the hero and dark Chaos Chao resemble an angel and a devil respectively.
Sonic X Shadow Generations[]
This section requires an expansion.
Other game appearances[]
Sonic Runners[]
Hero, Dark, and Neutral (referred to as Light) Chaos Chao appeared as Buddies in Sonic Runners, unlockable through the Premium Roulette. The first two would return in Sonic Runners Adventure, where they could be unlocked for 1,500 rings each.
Sonic Forces: Speed Battle[]
A Dark Chaos Chao appears in Sonic Forces: Speed Battle as the Steal Item Box power-up, exclusive to Metal Sonic.
Sonic Speed Simulator[]
A Light Chaos appears in the game as a collectible pet of the Exotic rarity, and has a 0.48% chance of being obtained from spinning the wheel after the Emerald Hill Boss Fight.
XP
Rings
Base
Evolved
Base
Evolved
Lvl. 1
+4004
+10010
+133
+332
The Hero variant of Chaos Chao, a version of Angel Chaos was also made avaiable within the game as part of the "Super Sonic: Part 2" Event. A total of five can obtained through powering up the Chaos Emeralds.
Alternate colored Hero Chaos, Dark Chaos and Light Chaos
References[]
↑"Raising a Chaos Chao". Sonic Adventure 2: Battle: Prima's Official Strategy Guide. Prima Games. p. 110. ISBN 978-0761539292.
↑Sonic Team (8 November 2022). Sonic Frontiers. PlayStation 5. Sega. Area/level: View Fish-o-pedia Menu. "Egg Memo 11': I don't believe this! I had Sage run a diagnostic on the recorded genetic data of the Ancients and then against archives I have with me. They're relatives to Chaos, the God of Destruction! After countless years, their DNA corroded to the point they were completely transformed into a new species. Some kind of radiation affected them for eons, making them unrecognizable -- except for a genius like me."