You can only have one chao in each version of Tiny Chao Garden sorry (They are in Sonic Advance, Sonic Advance 2, and Sonic Pinball).
yes
You must pay 5,000 rings in the Tiny Chao Garden to get a Garnet Chao
Yes, you can!
it is an evolution egg, where a child stage Chao is turning into an adult Chao
Use action replay
Yes if you beat the last challenge race the tv will be your prize.
Get a Gameboy and Gamecube hook up link cable. You can get one from gamestop for example. A link to gamestop's link cable is in the related links. Go to the thing you can put Chao in and choose "Transfer Chao". Make sure you are in the Chao Garden in Sonic Adventure.
you can't download it you have to have a gameboy advance with sonic advance 1 or 2 and you transfer your chao in the tiny chao garden on the gameboy advance using a cable(i don't remember wath sort of cable) NOTE:Works only on the GC version
I suggest not having a favored chao, because it may not transform at all...And you can't do anything with your problem... Sorry.
SA2 is for the Dreamcast, while SA2B is for the GameCube. SA2 has Big cameos in the level, SA2B does not.(SA2B only has cut scene cameos but so does SA2.) SA2B has more 2 player stages than SA2. SA2 allows you to put your chao in the VMU, SA2B allows you to put your chao in the Tiny Chao Garden. SA2B has Chao Karate. some chao world structure is different.(dark garden is TOTALLY different.) There are more.
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!
action replay or a in the tiny garden in the gameboy