Requirements:
Gamecube Or Wii
Gameboy Advance
Phantasy Star Online for the gamecube
Gamecube adapter link.
Operation: Get phantasy star online and put it in the wii or gamecube.
On one of the mission there will be a chao to rescue. after you help him he will give you 3 minigames, one of them being the tiny chao garden, which is why you need a gameboy advance AND sonic advance 2. Next, download the tiny chao garden in phantasy star online at the gameboy advance statue. after it downloads hook up the gameboy advance and gamecube (OR Wii) with the adapter link. start up sonic advance 2 and go to the tiny chao garden. when you load it up in with phantasy star still playing while at the gameboy advance statue, it will say "YOU HAVE GOTTEN THE RARE TAILS CHAO!!!" now put in sonic adventure 2 battle and go to the chao garden. once again, hook up the gamecube and gameboy advance with the adapter. now go to the gameboy advance in the garden and go to the pick up tab. in whichever controller slot the adapter is in it will show a tails chao. pick that slot and it will come out of the gameboy advance statue. Now you have a tails chao! I'm not sure if they die or not. but if they reincarnate they will stay looking like tails no matter what!
Use an action replay.
To get a Tails Chao in the Dreamcast version of Sonic Adventure 2, you need to breed a Dark and a Normal Chao. Raise the Dark Chao with a character like Tails or Dr. Robotnik until it evolves into a Tails-like Chao. This process can take time and patience, but eventually, you'll have your Tails Chao!
Use action replay
The only way you can get a Tails Chao and an Amy Chao in SA2B without Action Replay is by via hacking.
Pet a newborn chao with hero characters. (Sonic Tails Knuckles)
Either with Action Replay or owning Phantasy Star Online
To obtain a topaz chao in the Sonic Adventure 2 game, you need to raise a regular chao with a lot of Hero characters (such as Sonic, Tails, and Knuckles) or through the Chao Kindergarten races. By giving your chao the right animals and Chaos Drives, it will eventually transform into a topaz chao.
No. You need to make it yourself. Get a normal chao or a blue chao. Balance with both hero and dark characters to care for it. Give it only green chaos drives. When it evolves, it will look like sonic!
There is sonic, tails, knuckles, amy, rouge, eggman, shadow, chaos zero, tikal, dark chao, normal chao, metal sonic. So that would be 12 characters.
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.
Chaos (from sonic adventure) Is the guardian of the chao.
You need to have a regular chao to get a sonic chao on Sonic Adventure DX. Before your regular chao evolves to a neutral chao, you need to give it a lot of speed. As it evolves to green, give it more speed so it turns blue.
Tomoko Sasaki has: Played Chao in "Sonic Adventure" in 1998. Played Chao in "Sonic Shuffle" in 2000. Played Chao in "Sonic Adventure 2 Battle" in 2001. Played Chao in "Sonic Adventure 2" in 2001. Played Chao in "Sonikku adobencha DX" in 2003.