The Cuttle, Calamar, Man o' War, and Aqua Jelly are species of monsters randomly battled in Golden Sun and Golden Sun: The Lost Age. These monsters, resembling small jellyfish with a pair of arm-like appendages in addition to their tentacles, are palette-swapped variants of each other that have differing levels of power and defense and are fought in different locations in the games. This is a monster line that was introduced in the first game and expanded upon in the second, and is one of the only lines that have four distinctively named variants.