From one villain to another, we may have the makings of a Legion of Doom on our hands.
Abdul-Mateen is another impressive addition in an already stellar cast, joining Amber Heard and Patrick Wilson. There are also rumblings of Nicole Kidman signing on for a role, returning to the DC film universe after 1995's Batman Forever.
Black Manta is Aquaman's fiercest rival, and Black Adam is one of the most revered in DC's pantheon of villains. The two recently teamed together in the DC New 52 comic series Forever Evil.
The Rock has been one of the biggest social media champions for the DC Cinematic Universe and has had some creative input, choosing between the roles of Captain Marvel (or Shazam) and Black Adam.
Perhaps we could see Black Manta share the screen with Black Adam in the future.
Aquaman is the next DC Comics movie on the Warner Bros. production schedule. Filming is expected to begin in April 2017.
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Aquaman is being directed by James Wan, from a screenplay written by Will Beall, based on a story treatment created by Wan and Geoff Johns. In addition to Momoa as Aquaman and Abdul-Mateen as Black Manta, Aquaman also stars Amber Heard as Aquaman's wife, Mera, and Patrick Wilson as Aquaman's treacherous brother, Orm the Ocean Master.
Aquaman is scheduled to open in theaters on July 27, 2018.