Suggestions by @darke

Spoiler

as "The Traitor" in Green Lantern Corps

Anson Mount

as Martin Jordan in Green Lantern Corps

Dan Mindel

as Cinematographer in Green Lantern Corps

Mackenzie Davis

as Carol Ferris in Green Lantern Corps

Rhys Ifans

as Conrad Bloch in Green Lantern Corps

Daisy Ridley

as Iris West in Green Lantern Corps

Ben Hardy

as Barry Allen in Green Lantern Corps

Guillermo del Toro

as Director in Green Lantern Corps

Willem Dafoe

as Larfleeze in Green Lantern Corps

Daniel Craig

as Tomar-Re in Green Lantern Corps

Michael Gambon

as Ganthet in Green Lantern Corps

Ron Perlman

as Kilowog in Green Lantern Corps

Christian Bale

as Thaal Sinestro in Green Lantern Corps

Aaron Taylor-Johnson

as Hal Jordan in Green Lantern Corps

Larkin Seiple

as Cinematographer in The Flash

Ben Davis

as Cinematographer in The Flash

Forest Whitaker

as Dr. Silas Stone in The Flash

Edgar Wright

as Director in The Flash

Daisy Ridley

as Iris West in The Flash

Ben Davis

as Cinematographer in Wonder Woman