David Klaue (Earth-9991)

"Morality is the first step toward cowardice. Your cowardice has doomed your whole world. I will hunt down and kill everyone and everything you have ever loved. Listen for it...soon you will hear everyone you love scream."

- - Black Manta

David Klaue was a bounty hunter and mercenary who sought revenge on Aquaman after the death of his father at Atlan's hands. He failed to do so at first, at the cost of most of his body. Healed with cybernetics, Klaue named himself Black Manta, and, helping Baron Zemo he successfully killed Aquaman, only for the title to be taken by Atlan's son, Orin. Siding with Orin's vengeful adoptive brother, Ocean Master, Black Manta became Aquaman's greatest enemy, even far than Orm himself.