Henry Cavill as Superman
The first iconic DC Comic superhero introduced into the comics and the DC Cinematic Universe. Henry Cavill who was working in the small world has now entered the big leagues of Hollywood films other than portraying Superman in the Man of Steel movie that since the sequel was revealed to have Batman involved , he is now the full pledged DC Cinematic Superman.
Ben Affleck as Batman
As the DC Cinematic Batman, Ben Affleck has finally started moving back into the spotlight. Surely he may not have the voice like Christian Bale but who needs it. He'll still be able to pull it off as the
new Dark Knight
Gal Gadot as Wonder Woman
For a rookie actress, Gal was lucky to be cast as Wonder Woman in the DC Cinematic Universe. Since she was seen on set in a beautiful blue dress, her role is just as big Cavill and Affleck.
Adrien Brody as The Joker
After having his face teased on the reflection of the Batmobile on the Batsuit''s first official pic along with the card stuck to the wall, the Joker, Batman's arch enemy is now heavily speculated too appear in Batman vs. Superman Dawn of Justice, probably as the main villain since he is highly unpredictable. Surely the film was said to have Lex Luthor and Metallo as the villains with Jesse Eisenberg and Callen Mulvey set to portray them both, but now it seems that if the Joker is confirmed for the film, Snyder is gonna have to cast another actor to participate in the film and since Adrien Brody is still in the mood to play Joker, he is more than welcome aboard for the part.
Amy Adams as Lois Lane
As one of the most notable cast members of the films not needing to look exactly like the characters in the comics, Amy Adams is already underway at reprising her role as Lois Lane.
Jesse Eisenberg as Lex Luthor
While being a really disappointing choice to fans, Eisenberg has already signed the deal and is now Lex Luthor.
Callan Mulvey as Metallo
While not officially announced yet, Callen Mulvey is still speculated to portray the cyborg supervillain Metallo since he did roles in movies like 300 rise of an empire and Captain America the Winter Soldier where he is shown to be more of a serious physical type of actor.
Jeremy Irons as Alfred Pennyworth
After his days of being in lesser known films since Die Hard with a Vengeance, Jeremy Irons is now moving back up in Hollywood glory as the DC Cinematic verion of Bruce Wayne's butler Alfred Pennyworth.
Lawerence Fishburne as Perry White
As another example of characters not being exactly as shown in the comics, Lawerence Fishburne returns as the Unforgettable Perry White.
Holly Hunter as Leslie Thompkins
Known for voicing Elasta Girl from Disney Pixar's The Incredibles, Holly Hunter is rumored to portray one of Bruce Wayne's known associates Leslie Thompson.
Tao Okamoto as Cassandra Cain/Black Bat
After portraying Mariko from The Wolverine film, Tao is now moving up on her acting career as she has been recently cast for an unspecified role in Batman Vs. Superman. While her role has not yet been announced. chances are that she may play the role as Cassandra Cain, currently known as the Black Bat, one of Batman's best subordinates.
Ray Fisher as Cyborg
From out of nowhere, a new guy named Ray Fisher has been cast for the role of Cyborg who was originally a member of the Teen Titans but is now an official part of the Justice League
Hope you like this list and I hope everything in this list happens in the film