Hi! this link will tell you all you need to know:
http://chao.hippotank.com/sa2/gcstats.php
Chat with our AI personalities
To make the best chao possible you would first need to evolve it through many lifetimes, leveling up a stat for each lifetime until all stats are S. ( When your chao evolves one of it's stat ranks increases. For example if your chao's run ability has a rank of B it will have rank A when it emerges from the cocoon) When you have an all S chao you could make it a chaos chao to get as much time as you want to increase it's stats, as a chaos chao doesn't die with age. Making it a chaos chao is probably not mandatory though. The stats of a chao with an S rank on all stats grow faster, so this is why the ranks need to be increased. When you have a chaos chao with all S ranks all you need to do is keep giving it tubes and animals until all of it's abilities are level 99. I don't know if they will reach 9999 but that would be the best chao possible.
You cant, but you can go into room numbers where people rarely enter example "/join battleon-9999". Sh1k1 Rocks
Download Diamonds and starcoins cheat MovieStarPlanet
(MAX bp is 9999) L and R to activate 94000130 fffb0000 121d3450 0000270f d2000000 00000000
There is a code to steal Pokemon from trainers but I don't know if it works in the Battle Factory... That code is: 52249CF4 B056201912249CF4 0000E00AD0000000 00000000It dosent work in the battle factory.you need a activation code to use this cheatthe 9999 battle points is:94000130 FCFF0000B2101D40 0000000010007248 0000270FD2000000 00000000this code doesnt work!!!but i can give you one that does it good only glitch is when capturing Pokemon the ball stays open..