Justice League: A Better World
Black Manta is one of Aquaman’s greatest villains. His lethal high-tech suit allows him to survive underwater and adapt to any number of situations with an arsenal of destructive weaponry. Despite his prominence, Manta remains an enigmatic figure, his identity and his origins kept secret. The motivation for his villainy is a deep-seated hatred for the sea due to strong emotional reasons, and a personal vendetta against Aquaman.
Black Manta was a high-tech pirate who killed Aquaman’s son and the King of Atlantis was looking for him. He was also responsible for Aquaman’s earlier disease, a plague that he wanted to use to kill all atlanteans. He has a pirate ship with the same stats as a Atlantean Frigate.
See the events that are called Atlantis versus Themyscira for more details on the current status.