For many years, Mister Manta was the bane of seagoing commerce. He plundered ships for technology and valuables, or sank them in order to salvage what he wanted at his leisure. Few spoke his name without fear, and many respected him for the riches that he could bring them under his command. He was noted as a pioneer in aquatic crime. Eventually, he vanished after a battle with Mermaid, his battle suit's wing-servos and control system ruined and uncontrollable. He was presumed dead until recently.
When the Scandinavian Star was attacked by Skinner Bones and the Plunder Squad, Mister Manta arrived, wearing a suit which was primitive, apparently improvised from plants, but was no less effective - as the Plunder Squad discovered, much to their dismay. He was only recognized because of Mermaid, who arrived with a rescue team of Oceanians. While she was willing to offer him aid in returning to society, since the statutes of limitations on most of his crimes had expired, he fled when she was distracted, for reasons unknown. There are no large islands in the region where he was last seen; it is presumed that he is based on a small island in the region, or possibly an uncharted one.
Mister Manta can breathe underwater and has preternatural strength.