Suggestions by @aaronkime

Cameron Monaghan

as The Doctor in James Gunn’s Justice League

Lee Pace

as Jack Hawksmoor in James Gunn’s Justice League

Emmy Liu-Wang

as Swift in James Gunn’s Justice League

Kassandra Clementi

as Black Canary in James Gunn’s Justice League

Benedetta Porcaroli

as Zatanna in James Gunn’s Justice League

Brandon Perea

as Kyle Rayner in James Gunn’s Justice League

Jacob Tremblay

as Robin/Nightwing in James Gunn’s Justice League

Karl Urban

as Deathstroke in James Gunn’s Justice League

Svetlana Osadchenko

as Terra in James Gunn’s Justice League

Javon Walton

as Red Hood in James Gunn’s Justice League

Tony Leung Chiu-wai

as Ra's al Ghul in James Gunn’s Justice League

Josh Brolin

as Steppenwolf in James Gunn’s Justice League

Ray Nicholson

as The Joker in James Gunn’s Justice League

Marcus Johnson

as J'onn J'onzz/Martian Manhunter in DC Cinematic Casting Universe

Marcus Johnson

as Martian Manhunter in James Gunn’s Justice League

Caleel Harris

as Cyborg in James Gunn’s Justice League

Nicholas Hamilton

as The Flash in James Gunn’s Justice League

Sara Sandeva

as Wonder Woman in James Gunn’s Justice League

Lee Byung-hun

as Darkseid in James Gunn’s Justice League

Lee Byung-hun

as Darkseid in Actors Should play Darkseid in James Gunn's DCU