Ok, you will need 2 games, a GBA, the GC to GBA cord, and a gamecube/wii. the 2 games are Phantasy star online: Episodes I & II, the second is SA2:B(sonic adventure 2: battle). on PSO do the offline mission: Fake in yellow. now go to the Rappy u can talk to and talk to it 3 times. ignore what it says and go in the telepipe it gives u. go back through the telepipe back to the rappy place, and go over by the hill. u will see a normal Chao. talk to him and after all that go back to the city and go to the GBA thing that look VERY similar to the Chao transporter from SA2B and connect the GBA. a yellow chao named tails will be in the tiny chao garden. now transport him to Sonic and there u go. a chao that looks EXACTLY like tails. he has his hair, tails, ears and mouth/ nose. there u go enjoy!