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- 1). Ensure that you have a game save with access to the Chao Garden.
- 2). Attach the Action Replay device to your GameCube. Place the "Sonic Adventure 2: Battle" disc into the console and power up your system. You'll be taken to the code select screen. Choose the "Add New Code" option.
- 3). Input and activate the "Sonic Adventure 2: Battle" master code, which is "RRYU-KPMJ-2RG97/1JHA-F9UH-NEZ98". Save it to the Action Replay so you can use it again later.
- 4). Input the Omochao code, "WNB5-GWEW-U4JOP/UUH7-P89F-K2602/ 54GM-2PVC-MGZDT" at the "Add New Code" screen.
- 5). Save the code, activate it and start your game. Omochao will now appear in your Chao Garden. You'll be able to interact with him and raise him like any other Chao.
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