Enter "CHAMP" as a Gym name in Championship mode. Exit Championship mode and enter Arcade mode to unlock Damien Black. (Cheat also unlocks Kemo Claw, Bruce Blade and Nat Daddy.)

Enter "GOLD" as a Gym name in Championship mode. Exit Championship mode and enter Arcade mode to unlock Nat Daddy. (Cheat also unlocks Kemo Claw and Bruce Blade.)

Enter "SILVER" as a Gym name in Championship mode. Exit Championship mode and enter Arcade mode to unlock Bruce Blade. (Cheat also unlocks Kemo Claw.)

Enter "BRONZE" as a Gym name in Championship mode. Exit Championship mode and enter Arcade mode to unlock Kemo Claw.

When a fighter has been knocked down, rapidly press the controller buttons to restore lost energy.

(Note: After a knockdown, both fighters can recover lost energy.)

Hold Square + Circle while selecting a boxer.

Train your boxer in Championship mode. At the aerobics screen, press Left and immediately press A before the screen scrolls to the other training regimen. If done correctly, you will purchase $25,0000 vitamin bottle for $500, the price of aerobics training. By pressing Left or Right and then immediately pushing A, you can buy other items at the next screen's prices. However, the vitamins offer the best savings.

Acquire the letters "R-U-M-B-L-E" during a round. Then press Circle + X to initiate the fighter's Rumble Combo.