If you want to get a chaos chao the first thing you need is to pick rather you want it to be a
light chaos chao:
angel chaos chao:
or dark chaos chao:
THE LIGHT CHAO
First of all you must reincarnate your Chao at least twice. When this is done, you must then give the Chao ONE of EVERY animal (Yes, all 21 animals - NO CHAOS DRIVES).
Note: When making a Light Chao, make sure it stays neutral for evolution by using a mixture of Hero and Dark characters to care for it.
When it evolves it will be a Light Chao!
THE ANGEL CHAO
Follow the first two steps of making a Light Chao. (Reincarnate it at least twice and give it one of every animal - NO CHAOS DRIVES!)
Note: When making an Angel Chao, make sure it is on the Hero side for evolution by using Hero character to look after it.
When it evolves it will be a Angel Chao!
THE DEVIL CHAO
Follow the first two steps of making the other two Chaos Chao.
Note: When making an Dark Chao, make sure it is on the Dark side for evolution by using Dark character to look after it.
When it evolves it will be a Dark Chao
Q&A
What is reincarnation?
When your Chao dies and comes back to life. This is known as "Transformations" by the Chao Doctor on the Gamecube.
Can I give it Chaos Drives before it evolves?
No.
What about when its a Chaos Chao?
Then you can give it whatever you like. It won't suddenly stop being a Chaos Chao or anything =)
Can Chaos Chao be different colours?
Yes, try creating Chaos Chao with Coloured Chao, Jewel Chao, etc. You will be able to create lots of nice, different Chaos Chao!
DO CHAOS CHAO DIE?
NO THEY ARE IMMORTAL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!