This is the Chao I've had since 2007-2010. Most of them were strong Chao. Here's a list of my Chaoand how strong they were:
2007:
X-Chao, the very first Chao I've raised and that knew how to swim. A Hero Normal Chao.
Fist, the strongest Chao I've raised so far, the Power Lv. was at lv. 99. A Dark Fly Type with animal parts and a happy face.
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2008:
Magic, a white Chao with its Run Lv. was at 99. A Neutral Fly Chao with no legs.
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2009:
Drake, a Neutral/Power/Power Chao (a full red Chao).
Caspren, a 100% Sonic Chao and it's normal. It has a mad face.
Joseph, a way over the percentage of a Sonic Chao, like the fastest Chao on the Jewel Race 'Peridot'. Its Run stats were almost 3000!
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2010:
Plaza, a Neutral Power Chao with Lv. 99 in everything.
Ancient (the first Chaos Chao I had) was a Neutral Chaos Chao with Lv. 99 in everything. It was purple.
Angry, a pink Dark Chaos Chao (you can laugh at it all you want) and it has Lv. 99 in everything.
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Here's an extra. The Chao I had this year (just March 2013):
Daniel, a Shiny yellow Chao that was becoming a Hero Run Type.
Lloyd, a Silver Chao that wasn't raised very much and was becoming a Dark Fly Type.
Sonia, a Gold Chao that wasn't raised at all.
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That's all! Reply if you see a Chao that you like in the topic. You can tell me if you want to.