Paper Mario Encyclopedia Wiki
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Up arrow 1.gif

An Up Arrow is a key item that Mario must give to Merlon in order to power up his partners to ultra rank and teach them ultra-rank moves in Paper Mario: The Thousand-Year Door. It can be found in a hidden room in the spike room in Hooktail Castle, where Mario had to find a black key for the black chest in Chapter 1. Mario must Admiral Bobbery to blow up the crack to reveal the secret room.

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