Suggestions by @jeanpaulvalley

Katheryn Winnick

as Dinah Lance/Black Canary in Justice League vs Injustice League

Charlie Hunnam

as Oliver Queen/Green Arrow in Justice League vs Injustice League

Peter Mensah

as J'onn J'onzz/Martian Mahunter in Justice League vs Injustice League

Nathalie Emmanuel

as Shiera Hall/Hawkgirl in Justice League vs Injustice League

Naomi Scott

as Jennifer-Lynn Hayden/Jade/Green Lantern in Justice League vs Injustice League

Glen Powell

as Barry Allen/Flash in Justice League vs Injustice League

Jamie Alexander

as Diana Prince/Wonder Woman in Justice League vs Injustice League

Karl Urban

as Bruce Wayne/Batman in Justice League vs Injustice League

Richard Madden

as Clark Kent/Kal-El/Superman in Justice League vs Injustice League

Robert Redford

as Gary Mortenson in Justice League : Brainiac Invasion

Jensen Ackles

as Hal Jordan/Green Lantern in Justice League : Brainiac Invasion

Jane Seymour

as Martha Kent in Justice League : Brainiac Invasion

Bruce Greenwood

as Jonathan Kent in Justice League : Brainiac Invasion

Clive Owen

as Jor-El in Justice League : Brainiac Invasion

Jon Hamm

as Harvey Dent/Two-Face in Justice League : Brainiac Invasion

Timothy Dalton

as Alfred Pennyworth in Justice League : Brainiac Invasion

Felicity Jones

as Lois Lane in Justice League : Brainiac Invasion

Ralph Fiennes

as Brainiac in Justice League : Brainiac Invasion

Peter Mensah

as J'onn J'onzz/Martian Manhunter in Justice League : Brainiac Invasion

Nathalie Emmanuel

as Shiera Hall/Hawgirl in Justice League : Brainiac Invasion