Suggestions by @aaronkime

Joe Alwyn

as Green Lantern in Uncasted DCEU

Michael Fassbender

as Doctor Fate in The Perfect DC Cinematic Universe

Charlie Heaton

as Red Robin in The Perfect DC Cinematic Universe

Ben Kingsley

as Hugo Strange in The Perfect DC Cinematic Universe

Shaquille O'Neal

as Kilowog in The Perfect DC Cinematic Universe

Elizabeth Gillies

as Star Sapphire in The Perfect DC Cinematic Universe

Jonathan Majors

as Black Lightning in The Perfect DC Cinematic Universe

Richard E. Grant

as Brainiac in The Perfect DC Cinematic Universe

Emma Stone

as HawkGirl in The Perfect DC Cinematic Universe

Shameik Moore

as Firestorm in The Perfect DC Cinematic Universe

Mark Ruffalo

as Martin Stein in The Perfect DC Cinematic Universe

Hugh Jackman

as Malcom Merlyn in The Perfect DC Cinematic Universe

Levi Miller

as Beast Boy in The Perfect DC Cinematic Universe

Emilia Clarke

as Mera in The Perfect DC Cinematic Universe

Corey Hawkins

as Red Tornado in The Perfect DC Cinematic Universe

Joe Alwyn

as Hal Jordan in The Perfect DC Cinematic Universe

Zach McGowan

as Lobo in The Perfect DC Cinematic Universe

Robert Downey Jr.

as Two-Face in The Perfect DC Cinematic Universe

Fionn Whitehead

as Scarecrow in The Perfect DC Cinematic Universe

Diego Boneta

as Kyle Rayner in The Perfect DC Cinematic Universe