The following information is from the Adventure Time comic book series. It may not be part of the same canon or continuity as the animated series.

Monkey Wizard is a wizard king who Painting Princess wishes would kidnap her. When Finn and Jake accept a "reverse quest," they must convince him to kidnap Painting Princess or else Ooo would fall into chaos. However, Monkey Wizard has no interest in kidnapping her as she isn't a banana. When Finn and Jake suggested they force him to kidnap her, he simply has his Banana Guard throw them out. 

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