Armaggon

Armaggon is a villainous mutant shark and a foe of the Teenage Mutant Ninja Turtles in the 1988 Archie Comics series Teenage Mutant Ninja Turtles Adventures. Originating from a future timeline, he once joined forces with the Shredder and Verminator-X to defeat the Turtles and take over the world. As well as the Turtles, Armaggon has also fought Man Ray of the Mighty Mutanimals.

Abilities
Armaggon possesses strength far greater than a human being and is also a powerful swimmer. He wears a cybernetic harness which allows him to breathe out of water.

Other versions

 * Armaggon (TMNT '12)