Alternate costume colors:
Enter MJNKPNPN as a password. Alternately, unlock all twenty four pictures in gallery mode. Hold Start when selecting a fighter to get a black costume with an unlimited gauge. Hold Triangle when selecting a fighter to get a gold costume.

Fight as Dizzy and Testament and unlock GG mode:
Enter KYUSBNBN as a password. Alternately, press Down, Right(2), Up, Start at the title screen. A sound will confirm correct code entry.

New gallery mode challenge:
Enter 3GOU1SAD as a password.

Fight as Justice:
Unlock eighteen pictures in gallery mode.

Fight as Kliff:
Unlock twelve pictures in gallery mode