Wart
From Zelda Legends Wiki
A large, floating, one-eyed jellyfish who surrounds itself with a defensive barrier of smaller jelly blobs. One must defeat all the small blobs before attacking Wart directly. In ALttP, Wart is the boss of the second Dark World dungeon, the Swamp Palace, and is called Arrghus in the American version. In MM, he is the miniboss of various dungeons.
