Mephisto

Mephisto delights in exploiting humanity's belief in a singular figure of evil, the biblical Satan, and has often posed as this entity in order to strike deceptive bargains with unwitting human, providing them with their desires in exchange for their souls. Mephisto draws power from captive souls, and often targets those who are particularly powerful, or exceptionally pure.

Black Manta

The boy who would become Black Manta was an autistic youth who grew up in Baltimore, Maryland, and loved to play by the sea. As a youth he was kidnapped and forced to work on a ship for an unspecified amount of time.