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The Ninjohn is an enemy in Super Paper Mario. Its name is a pun on the word "ninja" and "John," a common name. It looks like a Ninjoe but it is green, faster, and often throws many ninja stars at the player and has more of a chance to become a decoy. They also deal more damage to the player since their attack is 3. The Ninjohn is found assisting Sammer Guys in Sammer's Kingdom, and on their own in the Flipside Pit of 100 Trials. There is no solid strategy to defeat it, though stunning it with Fleep and then jumping on it works effectively. While they may not be much of a threat alone, when they are encountered in groups, as they often are in the Pit of 100 Trials, they can become extremely dangerous.
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