READY 2 RUMBLE BOXING UNLOCKABLES
Champ class boxers
In championship mode, submit the gym name POD 5! . (Include the exclamation point and the space between "D" and "5"). Exit championship mode and enter arcade mode to have access to all the boxers including Damien Black.
Gold class boxers
In championship mode, submit the gym name MOSMA! . This will also unlock Nat Daddy in arcade mode.
Silver class boxers
In championship mode, submit the gym name RUMBLE BUMBLE . This will also unlock Bruce Blade in arcade mode.
Bronze class boxers
In championship mode, submit the gym name RUMBLE POWER . This will also unlock Kemo Claw in arcade mode.
Leprechaun cornerman
Press X + L + R at the character selection screen.
Alternate cornerman voices
Hold X and press the D-pad at the character selection screen.
Alternate costumes
Press X + Y at the character selection screen to access an additional set of costumes and introductions (in arcade mode).
Alternate backgrounds
Set the system date to December 25 to place Christmas trees in the prize fight arena. Set the system date to October 31 to place skeletons in the crowd.
Fight in the two-tier arena
Pick two player arcade mode, then hold L when picking a boxer at the character selection screen.
Fight in the championship arena
Pick two player arcade mode, then hold R when picking a boxer at the character selection screen.