Suggestions by @hungryhungryhippos

Sterling K. Brown

as Martian Manhunter in DC and Marvel recastings

Inde Navarrette

as Raven in DC and Marvel recastings

Adam Scott

as Blue Beetle in DC and Marvel recastings

Jacob Bertrand

as Arsenal in DC and Marvel recastings

Penn Badgley

as The Hulk in DC and Marvel recastings

Callum Turner

as The Flash in DC and Marvel recastings

Joseph Zada

as The Flash II in DC and Marvel recastings

Hudson Williams

as Nightwing in DC and Marvel recastings

Jacob Bertrand

as Arsenal in James Gunn DCU

Malachi Barton

as Beast Boy in James Gunn DCU

Niles Fitch

as Cyborg in James Gunn DCU

Cillian Murphy

as Mister Freeze in James Gunn DCU

Paul Giamatti

as Penguin in James Gunn DCU

Aimee Lou Wood

as Harley Quinn in James Gunn DCU

Callum Turner

as Flash in James Gunn DCU

Chukwudi Iwuji

as Martian Manhunter in James Gunn DCU

Josh Hartnett

as Batman in James Gunn DCU

Joseph Zada

as The Flash in James Gunn DCU

Jacob Bertrand

as Speedy/Red Arrow in James Gunn's DC Cinematic Universe

Joseph Zada

as Kid Flash/Flash II in James Gunn's DC Cinematic Universe