The Mad Duck is an enemy in EarthBound. It appears in the Brick Road Maze, the Desert Gold Mine, and Saturn Valley. They also appear as part of the "zoo" inside Dungeon Man. It's rather weak, however, it has an attack that can decrease a character's PP, and an attack that can disrupt concentration, taking away PSI abilities temporarily. These abilities have no effect on Jeff. It drops twelve dollars and sometimes a Fresh Egg.

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