Thread:Quick/@comment-362861-20200420035821/@comment-33173-20200420144510

Right, but I have no clue where to get one. If you can't find the Bass (Forte / フォルテ) Battle Chip (may be easier, but more pricey, to get the Japanese chip, as it's unknown if he was released overseas, unless you mean this "chip" :P), you could try searching for the Navi Chip Booster (ナビチップブースター) pack that includes it and hope to be lucky to have one inside.

Alternatively, if you only want to unlock him, you could use a cheat device to unlock with a code, use a savestate that has him unlocked, or use an emulator with Battle Chip Gate support.