Chaos Chao
All you have to do is get a chao to reincarnate (going into the thing that looks lke a chao head and then turning back into an egg) twice then give it all 21 animals. But I've heard if you give it any power drives, it will cancel the evoloution, I haven't tried it, but I wouldn't. I've gotten the good chaos chao and the bad one, now I'm working on the neutral. Somtimes on reincarnation the chao head thing can turn grey and that means the chao will die and wont turn into an egg again, but if it's pink it will turn back to an egg.
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