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Planet X is a boss planet for the J-Space world. This world will only appear once you've completed the Kinnikuman world and the three starting systems.
- Win the team point battle.
- Get three points more than your opponents.
- Get four points more than your opponents.
- Knock out three opponents with a special attack.
- Get six points more than your opponents.
- SPECIAL: Never get hit by a special attack. Doing this will unlock Pochi from Ninku.