As James Wan points out, Williams is a tremendous actor — earning incredible acclaim for his parts in the HBO series The Wire and Boardwalk Empire – and he also shares a distinguishing feature with the legendary DC Comics villain: a long scar on his face (albeit Black Manta has three, courtesy of Aquaman’s trident).
While it sounds like the chances of seeing Michael K. Williams as Black Manta in Aquaman seem quite slim, it’s not terribly hard to understand why fans might want to see him in the villainous part.