First, hatch a normal egg with Sonic. Next, give it green chaos drives with sonic and shadow. Then, it evolves, it should be lime green, has 3 spikes. Finally, continue giving it green chaos drives until it turnes blue. When done, it will be rich blue, longer spikes, blue wings, and a tail. Your chao is now a Sonic Chao!

This forum is for new chao beginners
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