Bleeding Cool ran a spec-ready article on three potential villains for the upcoming Batman vs. Superman: Dawn of Justice movie that is worth checking out.
The article is based of one done by Latino-Review, which are usually pretty in the know about movie spoilers.
First up is Victor Zsasz:
Victor Zsasz. Zsasz is a serial killer who cuts a small slash into his skin for every kill. The same way the Doctor kept track of the Silence… only more intense. Zsasz first appeared in Batman: Shadow Of The Bat #1
created by Alan Grant and Norm Breyfogle. He also appeared in Batman Begins played by Tim Booth.
Batman: Shadow Of The Bat #1 can be found for around $1 on eBay.
Next up is David Cain:
one of the world’s premier assassins. He debuted in Batman #567
and was created by Kelley Puckett and Damion Scott. Cain is a member of the League of Assassins and the father of Cassandra Cain, one of the women who has spent time as Batgirl. Cain is reported to have some dealings with Lex Luthor’s bodyguard Mercy Graves about setting up an assassination.
Batman #567 can be found for under $10.
Finally, they had Morgan Edge:
PR man for Lex Luthor. In the comics he was created by Jack Kirby in Superman’s Pal Jimmy Olsen #133
and was the leader of Intergang. Edge made a few appearances on Smallville played at first by Rutger Hauer and then later by Patrick Bergin. In the New 52, Edge is the owner of the Daily Planet.
Superman’s Pal Jimmy Olsen #133 can be found for around $20.