Fat boxer While you are at the character selection screen, press Right(2), Up, Down, Right, R(2), L. If the code was entered in correctly, you will hear a sound. Thin boxer While you are at the character selection screen, press Right(2), Up, Down, Right, R, L. If the code was entered in correctly, you will hear a sound. Undead boxer While you are at the character selection screen, press Left, Up, Right, Down, R(2), L. If the code was entered in correctly, you will hear a sound. Big gloves While you are at the character selection screen, press Left, Right, Up, Down, R, L. If the code was entered in correctly, you will hear a sound. Champion costumes Beat championship mode to unlock the champion costumes.