Mega Man Battle Network 2 Cheats

To unlock this special style, you must defeat all V3 navis (excluding Bass) with an S-rank. Then, the next time a style change occurs, you will get Hubstyle.
Hubstyle is a unique style that is non-elemental, and combines the benefits of every other style in the game. It will halve your max HP though.
This style will only show up once per game, so if you skip or erase it, it will be gone for good.
To confirm this unlockable, talk to the girl in ACDC Town behind the trees near the park. She will tell you which V3 navis you have defeated with an S-rank, and say that she sees all the available "ghosts" if you have defeated them all.