Suggestions by @tangerinecast

Jeremy Allen White

as Superman / Clark Kent in Superman: Flyby

Daniel Craig

as Jor-El in Superman: Flyby

Willem Dafoe

as Perry White in Superman: Flyby

Matthew Macfadyen

as Lex Luthor in Superman: Flyby

George MacKay

as Batman in Batman

Alexander Skarsgård

as Deathstroke in Batman

Simon Rex

as Killer Moth in Batman

Daniel Day-Lewis

as Alfred Pennyworth in Batman

Colin Farrell

as Batman in Batman

Zac Efron

as Catman in Batman

Robert Pattinson

as The Penguin in Batman

Elizabeth Debicki

as The Phantasm in Batman

Adrien Brody

as Carmine Falcone in Batman

Tom Sturridge

as The Scarecrow in Batman

Mads Mikkelsen

as Mr. Freeze in Batman

Tony Leung Chiu-wai

as Hugo Strange in Batman

Benicio del Toro

as Clayface in Batman

Nathan Fielder

as Kite Man in Batman

Wagner Moura

as Two-Face in Batman

Jesse Plemons

as Hush in Batman