Where do you find bass in Megaman battle network 6

The first place to find him at is the Undernet Zero. To get there, you have to go to the Green Area, make your way to the giant cybertree, then jump in the hole behind it. (you can't see the hole, so you'll have to search around by pressing the A button)After that, just follow the path and you will find a gravestone with Bass inside. After you beat him, he goes to Graveyard Area 2, which you can only get to by having all 200 standard chips. Graveyard 1 is located to the left of the high yellow platform in the undernet. After you beat him there, he returns a final time in the underground on the area where the ground is smashed in a crater. Here, you don't face Bass. Instead, Bass lures out the cybeast in the form it takes when united with megaman and sends it at you.