HP Drain (badge)

HP Drain is a badge in Paper Mario and Paper Mario: The Thousand-Year Door. In Paper Mario, it can be bought from Merlow at Shooting Star Summit for fifteen Star Pieces. In Paper Mario: The Thousand-Year Door, it is found in Rogueport, at an area near the docks accessible through Boat Mario, near Fahr Outpost, inside a red ? Block on the path to the Outpost, and possibly dropped after battle by Green Fuzzies and Swoopers. If Mario equips it, his attacks become weaker by one, but he gets healed by one HP for every turn he attacks. This means that performing multiple attacks only heals him once.

Merluvlee's prediction in Paper Mario

 * "I see...an HP Drain Badge. There is a child upstairs in the fortune-teller's house on Shooting Star Summit. Hey! I'm that fortune-teller! Anyway, the child is my brother, Merlow. He will trade Star Pieces for Badges. Head upstairs to see him!"