checked-no =>Cheap Mass Nutrition: While training your fighter, enter Rumble Aerobics. There, quickly press L A. You should get mass nutrition for the mere price of $500 for the rumble aerobics. =>Extra Fighters: Win a title fight in the Gold, Silver, or Bronze belts to enable extra fighters. =>Cheat Codes: Enter the Championship Modes and enter these codes as the gym name, then exit and enter the Arcade mode. |BRONZE| Bronze Class boxers |GOLD | Gold Class boxers |CHAMP | Championship Class - All boxers |SILVER| Silver Class boxers =>Rumble Combos: Earn the letters R U M B L E during a round, then press A+B to start the special rumble combo. =>Costume Change: In the Arcade mode, highlight your preferred boxed and press cL+cU. =>Corner Man Selection: In Arcade mode, before you choose your boxer, hold the left high punch button, then press the PAD in any direction to select from four cornermen, or don't press it at all for the fifth. If you hold down the left high punch, low block, and high block buttons, you will be given a squeaky voiced version of the old Irish trainer.