Sonic Adventure 2: Battle Discussion
Step One:Depending on your own personal preference really, buy a yellow, shiny yellow egg from the Black Market, or a Topaz egg from the Tiny Chao Garden in Sonic Advance 1 & 2.
Step Two:Raise your chao into either a Neutral Running Chao, or a Dark Running Chao. (Neutral looks more like Sonic, but Dark's spikes point up like Super Sonic)
Step Three:After it evolves once, continue to give it green animals or chaos drives to make it's spikes curve down or up further.
Hope this helps you
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