Paper Mario: The Thousand-Year Door Tips

Power Up !
You can get your partners powered up twice! All you need to do is first go to Hooktail castle. Next you go to where you got the black key to the paper curse. You should see a crack in the wall. Use Bobbery to blow up the wall and then go through. Open the chest and you will get an up arrow. Bring it back to the guy who powers up your partners. He will get an orb that lets you power up your partners twice. ( you can't power them up a third time.)