Suggestions by @mr_funcaster

Forrest Wheeler

as Nightwing in Gunn's DCU

Laura Harrier

as Black Canary in Gunn's DCU

Henry Golding

as Green Arrow in Gunn's DCU

Chiwetel Ejiofor

as Martian Manhunter in Gunn's DCU

Richard Madden

as Aquaman in Gunn's DCU

Michael Fassbender

as Deathstroke in Gunn's DCU

Dan Stevens

as Lex Luthor in Gunn's DCU

Jonathan Majors

as Lex Luthor in Gunn's DCU

Dev Patel

as Lex Luthor in Gunn's DCU

Sam Claflin

as Lex Luthor in Gunn's DCU

Ryan Hurst

as Darkseid in Gunn's DCU

Colin Ford

as The Flash in Gunn's DCU

Ross Lynch

as The Flash in Gunn's DCU

Rudy Pankow

as The Flash in Gunn's DCU

Sophia Ali

as Wonder Woman in Gunn's DCU

Anya Chalotra

as Wonder Woman in Gunn's DCU

James Norton

as Superman in Gunn's DCU

Richard Madden

as Batman in Gunn's DCU

Boyd Holbrook

as Green Lantern in Gunn's DCU

Austin Butler

as Green Lantern in Gunn's DCU