Fat boxer
 
 At the character selection screen, press Right(2), Up, Down, Right,
 R1(2), R2. If you entered the code correctly, you will hear a sound.
 
 Thin boxer
 
 At the character selection screen, press Right(2), Up, Down, Right,
 R1, R2. If you entered the code correctly, you will hear a sound.
 
 Undead boxer
 
 At the character selection screen, press Left, Up, Right, Down,
 R1(2), R2. If you entered the code correctly, you will hear a sound.
 
 Big gloves
 
 At the character selection screen, press Left, Right, Up, Down, R1,
 R2. If you entered the code correctly, you will hear a sound.
 
 Champion costumes
 
 Successfully complete championship mode to unlock the champion
 costumes. 
 
 Game Shark Codez:
 
             
 Start at Last Match (Arcade Mode) 
 D00A101C 0000
 800A101C 000B
             
 Player 1 Codez:                    
             
 Infinite Health                   
 800B0D30 0064
             
 75% Health                        
 D00B0D34 0064
 800B0D34 004B
             
 50% Health                        
 D00B0D34 0064
 800B0D34 0032
             
 25% Health                        
 D00B0D34 0064
 800B0D34 0019
             
 No Health                         
 800B0D30 0000
             
 Infinite Stamina                  
 800B0D34 0064
             
 No Stamina                        
 800B0D34 0000
             
 Max Rumble Meter                  
 800B0D3C 0090
             
 No Rumble Meter                   
 800B0D3C 0000
             
 Easy Knock Out                    
 800B0D30 0000
 800B0D34 0000
 800B0D3C 0000
             
 Player 2 Codez:                    
             
 Infinite Health                   
 800B1970 0064
             
 75% Health                        
 D00B1970 0064
 800B1970 004B
             
 50% Health                        
 D00B1970 0064
 800B1970 0032
             
 25% Health                        
 D00B1970 0064
 800B1970 0019
             
 No Health                         
 800B1970 0000
             
 Infinite Stamina                  
 800B1974 0064
             
 No Stamina                        
 800B1974 0000
             
 Max Rumble Meter                  
 800B197C 0090
             
 No Rumble Meter                   
 800B197C 0000
             
 Easy Knock Out                    
 800B1970 0000
 800B1974 0000
 800B197C 0000
             
 Championship Mode Codez:           
             
 Max Money                         
 800B3418 423F
 800B341A 000F
             
 Infinite Money                    
 800B3418 FFFF
             
 Max Strength                      
 300B341E 00FF
             
 Max Stamina                       
 300B3422 00FF
             
 Max Endurance                     
 300B3426 00FF
             
 Max Dexterity                     
 300B342A 00FF
             
 Max Experience                    
 300B342E 00FF
             
 Champ Rank                        
 800B3408 0000
             
 Wins Modifier                     
 800B340C ????
             
 Losses Modifier                   
 800B3410 ????
             
 Start at Championship Fight       
 D00B3408 000C
 800B3408 0001