Suggestions by @user_86553

Nikolaj Coster-Waldau

as Azrael in My Custom DC Universe

Score: +1

Sam Rockwell

as The Joker in My Custom DC Universe

Score: +1

Willem Dafoe

as The Joker in My Custom DC Universe

Score: +1

Bill Skarsgård

as The Joker in My Custom DC Universe

Score: +1

John Wesley Shipp

as Flash in My Custom DC Universe

Score: +1

Tom Hanks

as Flash in My Custom DC Universe

Score: +1

Alfie Allen

as Mad Hatter in My Custom DC Universe

Score: +1