Half-breed trash, I won't let you ruin my plans. All this was my doing. With Orm's mommy issues and sense of entitlement, coaxing him into war was child's play. Frankly, he irks the shit out of me. Once we've sunk the surface world, I'll slit his throat and claim the treasures of Atlantis—AAAGH!!
A greedy treasure hunter with an advanced suit of armor that greatly increased his combat potential, Black Manta orchestrated a war between Atlantis and the surface world by bombing the former and manipulating King Orm into retaliating. He did so in an attempt to plunder the riches of Atlantis, although he was defeated by Aquaman and imprisoned.
He later joined the Suicide Squad, a covert government-run team of supervillains that gave its members reduced prison sentences in exchange for their services. As a member of the Squad, Manta rebelled against the apocalyptic reign of the tyrant Darkseid who had invaded and taken control of Earth. Alongside his squadmates, Black Manta fought heroically against Darkseid's forces and was ultimately killed.
In an alternate timeline known as "Flashpoint" which was inadvertently caused by the Flash, Aquaman was the morally corrupt King of Atlantis who was locked in a world-spanning war with his former lover Wonder Woman and her Amazon armies. Aquaman sunk Western Europe and used it as a base, whereas Wonder Woman conquered the United Kingdom and named it New Themyscira. For whatever reason, Black Manta served as one of Aquaman's chief enforcers in Flashpoint.
At one point, Aquaman's armies intercepted an American vessel in their waters that was looking for the Atlantean doomsday weapon, a world-destroying bomb. The ship, captained by Deathstroke and Lex Luthor, was comprised of superhuman mercenaries. The Atlanteans emerged from the ocean and attacked the vessel. During the battle, Black Manta saved Garth and Kaldur'ahm from Deathstroke and subdued the enemy mercenary with his ocular beams. Aquaman and the Atlanteans subsequently slew everyone aboard. Black Manta was later present when Emperor Aquaman resolved to launch a ground invasion on New Themyscira.
During the invasion, Black Manta battled and killed a pair of Amazon warriors. He then fought Batman and Grifter, who were part of an American resistance trying to stop the war by attacking both sides. Although he initially had the pair on the ropes using his ocular beams, Batman was able to create a crack in Manta's helmet using a grenade. Batman and Grifter then fired into Manta's open helmet, killing him. Shortly thereafter the Flash was able to fix the timeline, returning everything back to normal.
Black Manta Suit: Black Manta's suit of armor was a technologically advanced marvel that allowed him to fight on par with superheroes and those with incredible abilities. It also doubled as a diving apparatus, allowing him to survive while submerged in water for extended periods of time.
Ocular Beams: Black Manta's suit was equipped with one primary and potent weapon: ocular beams. These beams took the form of red plasma that projected from the eye sockets in Manta's helmet. Incredibly deadly, Manta's beams could utterly eviscerate cars and kill enhanced individuals such as Deathstroke and the Amazons.
Superhuman Durability: Manta's suit was made of an exceptionally durable material that allowed him to sustain major blunt force attacks without injury. Low caliber bullets were utterly incapable of piercing or even damaging Manta's suit. However there were limits to his defences, as powerful enough weapons were able to pierce his suit. Additionally, strong creatures such as Paradooms could also negate the suit's defences.
Superhuman Strength: Black Manta's armor provided him with enhanced strength to the point that he could contend with superhuman warriors such as Atlanteans and Amazons. He was able to manhandle an Amazon warrior and crush her head in his hand, and could even stun Aquaman with his punches.