Suggestions by @aaronkime

David James

as Annihilus in MCU Annihilation Wave

Luke Bracey

as Adam Warlock in MCU Annihilation Wave

Emily Blunt

as Quasar in MCU Annihilation Wave

Marny Kennedy

as Moondragon in MCU Annihilation Wave

Daisy Ridley

as Caitlin Snow in DCEU

Vin Diesel

as Victor Fries in DCEU

Charlie Heaton

as Tim Drake in DCEU

Robert Downey Jr.

as Harvey Dent in DCEU

Emanuela Postacchini

as Zatanna Zatara in DCEU

Fionn Whitehead

as Jonathan Crane in DCEU

John Boyega

as John Stewart in DCEU

Zendaya

as Barbara Gordon in DCEU

Tom Holland

as Dick Grayson in DCEU

Indiana Evans

as Louise Lincoln in DCEU

Joe Cole

as Guy Gardner in DCEU

Jack Lowden

as Guy Gardner in DCEU

Joe Alwyn

as Hal Jordan in DCEU

Eleanor Tomlinson

as Pamela Isley in DCEU

Natalie Martinez

as Jessica Cruz in DCEU

Jessica De Gouw

as Jennifer-Lynn Hayden in Green Lantern Corps