Quote:
"It's this simple, is it? I can just watch you die... and then I rest."
-Black Manta

Name:
Black Manta

Real Name:
David ???

Personality:
Ruthless and violent, Black Manta was obsessed with killing Aquaman, and making himself the master of the seas. Cunning and manipulative, he will go to great lengths for his visions, and possesses strong leadership traits.
(None of the articles I consulted gave a good personality for him, so I tried to piece it together from biography sections, for the sake of ease, I'll probably go for the calm sociopath route, y'know, the guys who are unhinged to a degree, but keep calm while they do their things, if I remember right)

Backstory(Using 2003's origin story, bear with me since sources are weird):
A young orphan who was incarerated at Arkham Aslum, who possessed autism, the young Black Manta found himself most at ease in the water, finding cotton sheets painful. Mistreated by the doctors, he eventually turned violent after an experimental treatment "cured" him, and driven by an interest in Aquaman, set off to become master of the sea. By adulthood, he was able to design a diving suit that could withstand all sorts of undersea conditions, and by his machinations, birthed an army to help him conquer the seas. For most of his adult life he has waged war with Aquaman, swearing to make him pay for various perceived faults. How much of this is true and how much is false remains to be seen. After his last defeat at the hands of Aquaman, he was incarcerated at Belle. Awaiting the day he'd eventually break out again, and wreck havoc...

Powers, Skills, Equipment(copying all of this from the wikipedia article, for ease, sans the Black Pearl for reasons):
Black Manta possesses a keen scientific mind and is an expert in mechanical engineering and military tactics. Despite being a skilled hand-to-hand combatant and swordsman, he generally relies more on technology and strategic planning than direct physical confrontations.

As a result of the serum that cured him of his autism, Black Manta possesses some degree of advanced stamina and endurance. He utilizes a nigh-invulnerable battle suit that further enhances his physical strength and durability to superhuman levels, allowing him to lift and throw cars with ease. This armor is adapted to an oceanic environment, providing complete resistance to deep sea pressures and granting Black Manta the ability to breathe underwater. The suit also includes a jet pack propulsion system that functions in or out of water, a telepathic scrambler, and a wide array of different weapons and gadgets including twin swords, a hand trident, a wrist-mounted speargun on the right arm, a harpoon, deployable miniaturized torpedoes, and a diving helmet that can discharge powerful optic blasts from the eye lenses. Black Manta often uses unique vehicles, such as a modified manta ray-shaped submarine, for traveling underwater.