Heroes:
Superman/Clark Kent: Tyler Hoechlin (He already plays Superman in the Arrowverse and I cant think of anyone else to play Superman than him.)Batman/Bruce Wayne: Channing Tatum
Wonder Woman/Diana Prince: Rosario Dawson
Flash/Barry Allen: Grant Gustin (I love him as the Flash)
Green Lantern: Jack Gyllenhaal (Hal Jordan)/Idris Alba (John Stewart)
Aquaman/Arthur Curry: Justin Hartley
Martian Manhunter/J'onn J'onzz: David Harewood (Like Hoechlin, he has played the character in the CW series Supergirl)
Black Lightning/Jefferson Pierce: Sterling K. Brown (He is well known for play Randall Pearson on This Is Us. He also played the brother of T'chaka and Uncle of T'Challa in the MCU's Black Panther)
Green Arrow/Oliver Queen: Stephen Amell (Here we have our fourth CW actor who actually started it all)
SHAZAM/Billy Batson: Zachary Levi/Asher Angel (both actors played both sides of the character in the live action movie)
Villains:
The Joker: James FrancoHarley Quinn: Margot Robbie
Lex Luthor: John Cryer
Maxwell Lord: James Mcvoy
Black Mask: Ewen McGregor
Victor Zsaz: Chris Messina
Reverse Flash/Eobard Thawne: Matt Letscher (He played the character in some episodes of the Flash CW show and would later be a main villain in DC's Legends of Tomorrow Season 2)
Black Manta/David Hyde: Micheal B. Jordan
Deathstroke/Slade Wilson: Joe Manganiello (He was originally going to play the character in the DCEU until the universe was scrapped)
Bane: Tom Hardy (He played the character in the Dark Knight series and was really good)
Ra's al Ghul: Liam Nissan
Thaal Sinestro: Mark Strong
Black Adam/Teth-Adam: Dwayne 'The Rock' Johnson
There's the character list for the story hope you enjoy.

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Justice League: Legion
Fiksi PenggemarFor years the Justice League have been the protectors of our world. They've faced gods, Monsters, and even Darkseid himself. But what happens when the villains decide to have a league of their own? It could truly mean DOOM for all of them. This sto...