If you have a gameboy advance and a link to the gamecube and the gba then you could send chao into tiny chao garden in sonic advance and then put them back in the other game. It works!
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.
Sonic adventure battle 2
Yes there are chaos in sonic adventure 2 battle
Gold chao can only be found in sonic advance for the gameboy advance. Then you put it on sonic adventure battle
Sonic Adventure Battle (DC/GC) and Sonic Adventure Battle 2 (DC/GC)
No
There is no chao island. sorry.
No the chao gets sonic hair.
You Can In Sonic Adventure 2 Battle. I Think you can in DX.
Yes.
You don't.
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