I have a lot, and I mean a LOT of chao. To keep them organized, I sometimes use what I call "chao formulas". For example, I named one of my chao N:G:G. Do you know what that stands for? Neutral, green, green. I see that as directions for making a Sonic chao. I need to give him green chaos drives/animals, then evolve him as a neutral chao, and give him green chaos drives/animals for his 2nd evolution. Just thought I would share this little tip with you!