POW-Up

POW-Up is a status condition that reoccurs throughout the Mario RPGs.

Paper Mario series
In Paper Mario, POW-Up only appears when Watt uses her Turbo Charge technique on Mario giving him increased attack power for a number of turns.

In Paper Mario: The Thousand-Year Door, POW-Up is a little more common and can be mainly used via Power Lift. Using one of the Charge badges also increases attack power as well.