Suggestions by @jreeve50

Thomas Middleditch

as Salaak in Green Lantern Corps

Hunter Schafer

as Arisia Rrab in Green Lantern Corps

Zazie Beetz

as Katma Tui in Green Lantern Corps

Kevin Michael Richardson

as Kilowog in Green Lantern Corps

Aaron Pierre

as John Stewart in Green Lantern Corps

Timothy Olyphant

as Hal Jordan in Green Lantern Corps

Chris Mundy

as Executive Producer in Green Lantern Corps

Walton Goggins

as Adam McCafferty in Superman

Kevin Smith

as Bibbo Bibbowski in Superman

Dichen Lachman

as Mercy Graves in Superman

Wendell Pierce

as Perry White in Superman

María Gabriela de Faría

as Menagerie in Superman

Mackenyu

as The Hat in Superman

Brian Tyree Henry

as Coldcast in Superman

Ncuti Gatwa

as Manchester Black in Superman

Pruitt Taylor Vince

as Jonathan Kent in Superman

Neva Howell

as Martha Kent in Superman

Nicholas Hoult

as Lex Luthor in Superman

Skyler Gisondo

as Jimmy Olsen in Superman

Rachel Brosnahan

as Lois Lane in Superman