To get an Onyx Chao in Sonic Adventure 2: Battle is to have Sonic Advance 1 or 2 (Tiny Chao Garden) and a GBA link cable to transfer it to the Gamecube. It costs 20,000 rings and it's a little rare. But it can be found at the shop in the Tiny Chao Garden. Hope this helps!
Sonic Chao turns blue on it's second evolution.
You would breed a yellow chao and blue chao. Or you could buy a green chao egg from the black market.
this is how i did it i traded my chao from sonic dx to another chao from sonic advance 2 for the GBA then i traded that same chao to my one of my chao in sonic 2 battle
No the chao gets sonic hair.
Sonic Adenture 2 is the original game for the Dreamcast and Sonic Adventure 2 Battle is a remake for the Gamecube. Sonic Adventure 2 Battle has better graphics, chao karate class, chao activities and chao shops.
get a blue chao and make it a neutral run type
Gold chao can only be found in sonic advance for the gameboy advance. Then you put it on sonic adventure battle
Sonic adventure battle 2
There is no chao island. sorry.
There is more to Sonic Chao than the first evolution. First raise your chao to have high speed until it evolves into a green adult chao (Adult Speed Type) and then keep feeding it green chaos drives and no other drives. he will slowly change into a Sonic chao. (This does take a long time to do!)
Chao are little blue creatures that you can keep as pets in the sonic games. you have to take good care of them.
No