Suggestions by @toughsandwich

Joe Morton

as Amon Sur in Justice League International

Jason Bateman

as Maxwell Lord in Justice League International

Kerry Washington

as Katma Tui in Justice League International

Steven Yeun

as Kyle Reyner in Justice League International

Ritu Arya

as Madame Xanadu in Justice League International

Bob Odenkirk

as Deadman in Justice League International

David Tennant

as Etrigan in Justice League International

Jeremy Irons

as Doctor Fate in Justice League International

Grace Caroline Currey

as Zatanna Zatara in Justice League International

Colin Farrell

as John Constantine in Justice League International

Nathalie Emmanuel

as Iris West in Justice League International

Hailee Steinfeld

as Wonder Girl in Justice League International

Justice Smith

as Cyborg in Justice League International

Elijah Wood

as Beast Boy in Justice League International

Alexandra Daddario

as Starfire in Justice League International

Mary Elizabeth Winstead

as Raven in Justice League International

Zendaya

as Bumblebee in Justice League International

Dylan O'Brien

as Nightwing in Justice League International

Bruce Campbell

as Booster Gold in Justice League International

Jim Carrey

as Plastic Man in Justice League International