Suggestions by @aloloco

Leonardo DiCaprio

as Arthur Fleck in Actors who were almost cast in Major DC Roles

Billy Dee Williams

as Max Shreck in Actors who were almost cast in Major DC Roles

Nicolas Hoult

as Superman (DCU) in Actors who were almost cast in Major DC Roles

Nicolas Hoult

as Batman (Bat-verse) in Actors who were almost cast in Major DC Roles

Amanda Seyfried

as Harley Quinn in Actors who were almost cast in Major DC Roles

Nicolas Cage

as Superman (Superman lives) in Actors who were almost cast in Major DC Roles

Will Smith

as Bloodsport in Actors who were almost cast in Major DC Roles

Idris Elba

as Dead Shot in Actors who were almost cast in Major DC Roles

Matt Bomer

as Superman (DCEU) in Actors who were almost cast in Major DC Roles

Jonah Hill

as Oswald Cobblepott in Actors who were almost cast in Major DC Roles

Lupita Nyong'o

as The Cat in Actors who were almost cast in Major DC Roles

Jessica Biel

as Selina Kyle in Actors who were almost cast in Major DC Roles

Jonah Hill

as Eduard Nashton in Actors who were almost cast in Major DC Roles

Sam Rockwell

as Joker in Actors who were almost cast in Major DC Roles

Robert Downey Jr.

as Scarecrow in Actors who were almost cast in Major DC Roles

Dwayne Johnson

as SHAZAM in Actors who were almost cast in Major DC Roles

Cillian Murphy

as Batman (Nolanverse) in Actors who were almost cast in Major DC Roles

Josh Brolin

as Batman (DCEU) in Actors who were almost cast in Major DC Roles

Sandra Bullock

as Wonder Woman in Actors who were almost cast in Major DC Roles

Zoe Saldaña

as Lois Lane (DC Extended Universe) in Actors who were almost cast in Major DC Roles