Things You'll Need
Instructions
Load the Action Replay disk into your GameCube console and turn it on. Allow the main menu to load, then eject the disk and load your copy of "Sonic Adventures 2: Battle" into the system.
Highlight the "Enter New Code" option, then press "A." This option becomes available once the Action Replay software recognizes the game disc.
Type "Master Code" as the name of the cheat using the virtual keyboard. Press "Start" when you are finished.
Type "RRYU KPMJ 2RG97 1JHA F9UH NEZ98" using the virtual keyboard, but leave the spaces out. These are entered automatically as you type. Press "Start" to save the code into the system.
Select "Enter New Cheat" again and type "Omochao" as the code name so you remember what the code does. You can enter anything you want in this field, but it is recommended you give the code a name that correlates to what the code does.
Type "WNB5 GWEW U4JOP UUH7 P89F K2602 54GM 2PVC MGZDT" using the virtual keyboard. Again, leave the spaces out as the software automatically places these as you type. Press "Start" to save the cheat.
Select the "Start Game" option to launch the game with the codes you just entered. When you go to the Chao Garden, Chao will have been made into Omochao.