Well, we knew Warner Bros. is looking at 300: Rise of an Empire and Zero Dark Thirty actor Callan Mulvey for a villain role in Batman vs. Superman and my first thought was maybe he was reading for Lex Luthor. Of course, he's not already bald, so most fanboys will be unable to imagine the actor in the role. Maybe that lack of imagination got them digging for other possibilities, because ThinkMcFlyThink is now saying, through their sources, that he is up for the role as Metallo.
I'm not sure how much sense this makes other than the fact that Lex will probably need a front-man for Superman and Batman to come together and battle at some point. This leaves Lex safely behind the scenes for future movies as they beat down whatever other badguy tries to strong arm them. But Metallo is known for using kryptonite against Superman, something that hasn't really popped up yet in the Man of Steel version. Not that they couldn't find kyptonite in the next movie, with so much use in previous movies and shows, the movie going audience is already familiar with the material.
Just yesterday we heard from the same producer that said they were working on the deal for Wonder Woman that Doomsday would be a villain. With today's news that Gal Gardot has been cast as Wonder Woman (or Diana as she may appear in the movie) does that give more credibility to the producer's tweets than ThinkMcFlayThink's source? With all the rumors flying about this movie, who knows at this point. Internet rumor-scoopster El Mayimbe tweeted "METALLO" today, but by the time this is over, he will have talked about ten different villains and when one is chosen, he'll say he told us all first. So really, all we know at this point is Callan Mulvey is reading for a role in the movie.
If you want to keep up with all the rumors around Batman vs Superman, we'll try and help you:
Good Luck, and stay tuned for official news as well as rumors.