If you play the mission "the fake in yellow" and
beat the mission go back to the level and there will be Rag Rappies staring at boxes.Go to the boxes and a chao will appear and then go back to
Pioneer 2 and there will be a gameboy advanced near the hunter's guild.upload a chao from PSO by talking to the gameboy advanced and then turn off pso and put in Sonic Adventure 2 Battle and put the chao on the game.WOW!! It is a chao that looks just like TAILS!!