Suggestions by @jgrim

Timothée Chalamet

as Nightcrawler in Deadpool

Ryan Reynolds

as Deadpool in Deadpool

Idris Elba

as Floyd Lawton in Deadshot

Jamie Dornan

as Hawkman in Superman Doomsday returns

Armie Hammer

as Green lantern in Superman Doomsday returns

Ray Fisher

as Cyborg in Superman Doomsday returns

Jason Momoa

as Aquaman in Superman Doomsday returns

Ezra Miller

as Flash in Superman Doomsday returns

Gal Gadot

as Wonder women in Superman Doomsday returns

Jon Hamm

as Batman in Superman Doomsday returns

Lou Ferrigno

as Doomsday in Superman Doomsday returns

Amy Adams

as Lois lane in Superman Doomsday returns

Henry Cavill

as Superman in Superman Doomsday returns

David Sobolov

as Gorilla girod in Legion of Doom

Kristen Wiig

as Cheetah in Legion of Doom

Matthew McConaughey

as Reverse flash in Legion of Doom

Yahya Abdul-Mateen II

as Black manta in Legion of Doom

Joe Manganiello

as Deathstroke in Legion of Doom

Jesse Eisenberg

as Lex luthor in Legion of Doom

Ron Perlman

as Kilowog in War of Light (Arrowverse)