Icky is a large gastropod resembling a slug. He absorbs energy directly from his surroundings, understands several languages, and communicates through patterns of electric buzzes. If he doesn't absorb the natural energy of Aquari-Yum, the site will fatally boils over. Besides, he needs to feed on energy to survive, otherwise he'll lethally shrivel up to nothing. He can also camouflage himself. Icky appears on The Quest.