'Batman V Superman: Dawn Of Justice' Gains Ben Affleck's 'Argo' Castmate

File this one under "things that pretty cool." Amazingly named and talented actorfella, Scoot McNairy, is set to appear in the Batffleck-fronted "Batman V Superman: Dawn of Justice." And the studio's mums-the-word attitude on whom he might play has us even more intrigued. Could the "Argo" and "Non-Stop" actor be playing one of the big baddies? Ooh, we sort of hope so!

With so many of the main roles locked and loaded — Ben Affleck as Batman, Henry Cavill reprising his Super-dude role, Gal Gadot as Wonder Woman, Jesse Eisenberg as Lex Luthor, Jeremy Irons as Alfred — in addition to "Man of Steel" returners Amy Adams, Laurence Fishburne, and Diane Lane, the film does seem to be lacking an antagonist that would be a worthy of both Batman AND Superman, Right? (Sorry, Lex.) Which begs the question: who in DC Universe might McNairy take on?

The film heads to theaters May 6, 2016, so it's still a ways off — but still, the addition of McNairy is an exciting one, don't you think? If it were up to you, who would he play? Let's speculate together in the comments.