Suggestions by @jahshaman

Winston Duke

as Gorilla Grodd in DCU

Gerard Butler

as General Zod (Dru-Zod) in DCU

Abbey Lee

as Frost (Caitlin Snow) in DCU

Dylan O'Brien

as Firestorm (Ronnie Raymond) in DCU

Rachel Zegler

as Donna Troy in DCU

Aaron Paul

as Deadman (Boston Brand) in DCU

Bill Burr

as Deadman (Boston Brand) in DCU

Javier Bardem

as Darkseid (Uxas) in DCU

Theo Rossi

as Captain Cold (Leonard Snart) in DCU

Richard E. Grant

as Brainiac (Vril Dox) in DCU

Andy Samberg

as Booster Gold (Michael Jon Carter) in DCU

Michael Imperioli

as Black Mask (Roman Sionis) in DCU

Jameela Jamil

as Big Barda (Barda Free) in DCU

Aaron Moten

as Batwing (Luke Fox) in DCU

Alexander Ludwig

as Azrael (Jean-Paul Valley) in DCU

Jeremy Allen White

as Arsenal (Roy Harper) in DCU

Travis Fimmel

as Aquaman (Arthur Curry) in DCU

Bill Nighy

as Alfred Pennyworth in DCU

Dave Franco

as Adam Strange in DCU

George MacKay

as Adam Strange in DCU