Suggestions by @mephilesthedark

Chukwudi Iwuji

as Brainiac in Perfect World of DC

Benedict Cumberbatch

as Brainiac in Perfect World of DC

Will Poulter

as Aquaman in Perfect World of DC

Lucas Till

as The Flash in Perfect World of DC

Ulrich Thomsen

as Sinestro in Perfect World of DC

Melissa Barrera

as Wonder Woman in Perfect World of DC

Elizabeth Debicki

as Wonder Woman in Perfect World of DC

Ella Purnell

as Harley Quinn in Perfect World of DC

David Corenswet

as Superman in Perfect World of DC

Brandon Sklenar

as Batman in Perfect World of DC

"Weird Al" Yankovic

as Riddler / Edward Nygma in Best BATMAN Actors

Ben Stiller

as The Clock King in Batman

Seth Rogen

as Professor Pyg in Batman

Brendan Fraser

as Firefly in Batman

Cary-Hiroyuki Tagawa

as Hugo Strange in Batman

Keith David

as Hugo Strange in Batman

Simon Pegg

as The Mad Hatter in Batman

Tom Rhys Harries

as Clayface II in Batman

Giancarlo Esposito

as Mr. Freeze in Batman

Elizabeth Olsen

as Poison Ivy in Batman