my chaos stats are all at level 99 and i am trying to complete the dark chao race but i have one problem.....MY CHAO IS A HERO TYPE!!!!!!!!!I URGENTLY NEED SOME ASSISTANCE!!!!i must know if it is possible to transform hero chaos into dark chaos
You can change a chao's alignment only during its infant stage. You could change your hero chao to dark after it reincarnates (it will have a nice stat boost if you do), but you may as well raise another chao for the dark race.

~ Crazy C Lea