First, hatch a normal (spotted egg) with Sonic. Next, give the Chao green chaos drives with Sonic and Shadow, it will start turning green. (there's a cheat for reusing chaos drives). Then, if आप increase the Chao's stamina to level 6-8, it will eventually evolve, and it will be चूना, चूने green, 3 spikes, and brown toes. Finally, continue giving it green chaos drives, but with only Sonic. When done, it will be rich blue, and the ears (for some reason) will resemble Sonic. If those are on your Chao, आप have a Sonic Chao!
First, hatch a normal (spotted egg) with Shadow. Next, give the Chao chaos drives with Shadow only. It will turn brownish-black (probably). Then, when आप increase the Chao's stamina to level 9-12, it will eventually evolve. Finally, continue giving it chaos drives until it turns black and red (this may take a while). When done, it will be black and blood red, and 2 spikes that go down and 1 that stays up, and the ears will 70% resemble Shadow. Your Chao is done! आप now have a Shadow Chao! Go to my प्रोफ़ाइल and I'll tell आप all help about Chao.
