Suggestions by @realcasually

Rami Malek

as Robin/Nightwing in The Perfect DC Cinematic Universe

Cress Williams

as Black Lightning in The Perfect DC Cinematic Universe

Kiersey Clemons

as Iris West in The Perfect DC Cinematic Universe

Kevin Michael Richardson

as Kilowog in The Perfect DC Cinematic Universe

F. Murray Abraham

as Hugo Strange in The Perfect DC Cinematic Universe

Jeremy Irons

as Alfred Pennyworth in The Perfect DC Cinematic Universe

Andy Serkis

as Alfred Pennyworth in The Perfect DC Cinematic Universe

Mary Elizabeth Winstead

as Huntress in The Perfect DC Cinematic Universe

Adewale Akinnuoye-Agbaje

as Killer Croc in The Perfect DC Cinematic Universe

Evan Rachel Wood

as Batwoman in The Perfect DC Cinematic Universe

Spencer Locke

as Wonder Girl in The Perfect DC Cinematic Universe

Crispin Glover

as Scarecrow in The Perfect DC Cinematic Universe

Joivan Wade

as Cyborg in The Perfect DC Cinematic Universe

Ryan Hurst

as Lobo in The Perfect DC Cinematic Universe

Paul Dano

as The Riddler in The Perfect DC Cinematic Universe

Timothy Spall

as The Penguin in The Perfect DC Cinematic Universe

Ashraf Barhom

as Rā's al Ghul in The Perfect DC Cinematic Universe

Ghassan Massoud

as Rā's al Ghul in The Perfect DC Cinematic Universe

Alexander Siddig

as Rā's al Ghul in The Perfect DC Cinematic Universe

Zoë Kravitz

as Catwoman in The Perfect DC Cinematic Universe