The Drowned

The Drowned is a villainous version of Batman from the DC Comics universe. She is a member of the Dark Knights, a group of vigilantes from the Dark Mutiverse whose goal is to assist the deity Barbatos plunge the central DC Multiverse into darkness.

Origin
In the gender reversed Earth -11, Bryce Wayne’s love interest Sylvester Kyle was killed by a bunch of rouge metahumans. Heartbroken and vengeful, Batwoman lost trust in all metahumans and spent the next eighteen months murdering every single metahuman on the world's surface to avenge Sylvester. Eventually, the Atlanteans led by Aquawoman surfaced in hopes of making peace with surface dwellers. However Batwoman didn't believe this for a moment, and when peace talks with the surface went sour, she fought and killed Aquawoman by impaling the queen with her own trident. In retaliation, the Atlanteans completely flooded Gotham City and submerged it underwater. Desperate to fight back, Batwoman decided to surgically alter her physiology and genetics to stand a better chance against Atlanteans, and also created her own army of creatures called Dead Water to combat the Atlantean forces.

After a mighty war, Batwoman succeeded in not only wiping out the Atlanteans, but also conquered Atlantis and decided to submerge the rest of the world underwater. Batwoman then lit the Batsignal in Gotham as a sign of victory and hope, but when the light went out, she went to investigate and found The Batman Who Laughs. He tells Batwoman that, like the rest of the Dark Multiverse, she and her world continue to suffer because it sustains another Multiverse that exists above their own, and he offers her a chance to conquer the Muliverse above by joining the Dark Knights. Batwoman accepted his offer and became known among the group as The Drowned.