Suggestions by @directorwilko360

Edi Gathegi

as Mister Terrific in The Officially Confirmed Cast Members Of James Gunn's DCU

Nathan Fillion

as Green Lantern (Guy Gardner) in The Officially Confirmed Cast Members Of James Gunn's DCU

Nicholas Hoult

as Lex Luthor in The Officially Confirmed Cast Members Of James Gunn's DCU

Skyler Gisondo

as Jimmy Olsen in The Officially Confirmed Cast Members Of James Gunn's DCU

Rachel Brosnahan

as Lois Lane in The Officially Confirmed Cast Members Of James Gunn's DCU

David Corenswet

as Superman in The Officially Confirmed Cast Members Of James Gunn's DCU