Guardian Chao
I've only worked with a few of these chao, but they are very similar to the blitz chao in how they are hatched and raised. Here's the way to get one of the many types of "Guardian" Chaos:
Step 1: Obtain a grown, three-year or older regular chao. Place in any garden.
Step 2: Obtain either a white OR a shiny white chao that's three years or older and put it in the same garden as the regular chao. Note: If you don't have either, then raise the chao that you need. After having both grown chao in the same garden, move onto step 3.
Step 3: Buy lots of Heart Fruits. Heart fruits are the fastest answer to getting your chao to mate and make an egg. Anyway, feed each of your chao a heard fruit. Once both have flowers around them, bring the regular chao over to the colored chao and let them lay an egg. If the baby happens to be a regular chao, then congratulations. You're very close to having a guardian chao! If not, then keep feeding your chao heart fruits until the chao that hatches looks like a regular baby chao.
Step 4: Take care of the baby chao and raise it with both hero and dark characters to make it metamorphosize into a neutral type. Give it green, red, yellow, or purple chaos drives and feed it until it reaches a certain stamina level, then wait for the cocoon to appear around it. When it becomes an adult, it'll look really cool! Say you made your chao a neutral running type - the green color will be replaced by white, and the chao will look really fruity. Try different combinations to see what you'll get!
