Suggestions by @ringothedrummer

Lewis Pullman

as Superman in Justice League

Starro

as “The Conqueror” in Green Lantern Corps

Spoiler

as “The Conqueror” in Green Lantern Corps

Glenn Close

as Sayd in Green Lantern Corps

Jeremy Irons

as Appa Ali Apsa in Green Lantern Corps

Stephen McKinley Henderson

as Ganthet in Green Lantern Corps

Ken Watanabe

as Abin Sur in Green Lantern Corps

Alan Tudyk

as Ch’p in Green Lantern Corps

Ritu Arya

as Katma Tui in Green Lantern Corps

Ving Rhames

as Kilowog in Green Lantern Corps

Stephen Merchant

as Tomar-Re in Green Lantern Corps

John Boyega

as John Stewart in Green Lantern Corps

Sterling K. Brown

as Thaal Sinestro in Green Lantern Corps

Spencer Wilding

as The Manhunters in Green Lantern Corps

David Tennant

as Larfleeze in Green Lantern Corps

Emma Mackey

as Carol Ferris in Green Lantern Corps

Logan Lerman

as Green Lantern in Green Lantern Corps

Rene Russo

as Dinah Drake in Green Arrow: The Battling Bowman

Rhys Ifans

as Robert Queen in Green Arrow: The Battling Bowman

Nicole Kidman

as Moira Queen in Green Arrow: The Battling Bowman