Ultimate Muscle Codes -

 

Play as King Muscle:
Successfully complete the game without losing to unlock King Muscle in versus and tournament modes.

Play as Young Buffaloman:
Win survival mode under the normal difficulty setting to unlock Young Buffaloman in versus and tournament modes.

Play as Young Ramenman:
Win 3-on-3 mode under the normal difficulty setting to unlock Young Ramenman in versus and tournament modes.

Play as Sgt. Kinnikuman:
Win survival mode under the hard difficulty setting to unlock Sgt. Kinnikuman in versus and tournament modes.

Play as Young King Muscle:
Win story mode under the easy difficulty setting without losing to unlock Young King Muscle in versus and tournament modes.