Suggestions by @nathanbates

Lupita Nyong'o

as Galadriel in Black Lord of the Rings

Kelvin Harrison Jr.

as Superman in Superman Reboot

Christina Hendricks

as Jessica Rabbit in Who Framed Roger Rabbit (2008)

Kiefer Sutherland

as Oliver Quinn in The Schumacherverse

Crispin Glover

as Joker in The Schumacherverse

Keanu Reeves

as Arthur Curry in The Schumacherverse

Oscar Isaac

as Batman in If marvel actors played DC characters

Kurt Russell

as James Gordon in Sam Raimi's Batman (2002)

Robin Williams

as The Scarecrow in Sam Raimi's Batman (2002)

Jon Polito

as Salvatore Maroni in Sam Raimi's Batman (2002)

Viggo Mortensen

as Batman in Sam Raimi's Batman (2002)

Evan Rachel Wood

as Mera in Aquaman (2020s)

Mary Elizabeth Winstead

as Mariette in Blade Runner 2049

Dan Stevens

as Officer K in Blade Runner 2049

Delroy Lindo

as Magneto in Characters for future MCU movies

Chris Sullivan

as Kilowog in Justice for All

Ben Whishaw

as Saint Walker/Bro'Dee Walker in Justice for All

Javier Bardem

as Nuidis Vulko in Justice for All

Ana de Armas

as Mera in Justice for All

Brendan Gleeson

as Nuidis Vulko in Justice for All