I just came up with a CRAZY casting idea for Black Mask no one thinker about. And it’s Rami Malek. Mr. Robot shows he is poop your pants level of scary and has good eye movement since Black Mask where’s a mask a lot. He also plays the next Bon villain in No Time To Die which shows him being a villain. Also the company that made Mr. Robot was called Black Mask Studios. Coincidence? I think not!
Is this a good choice?
Honestly I think Rami Malek could play just about any DC character well.
He could play Batman, Red Hood, Joker, Scarecrow, Black Mask. But I don’t every DC character. I also see him as Night Crawler or Moon Knight in the MCU.