There are quite a few actors that I think would fit that role. Michael Fassbender would probably do a really good job, as would Christian Bale. Did anything come of that rumour?
Bale's tied up doing back to back films with Terrence Malick, which is why he turned down Aronofsky's Noah. And it looks like Fassbender is taking that, which would make him busy at the same time as well.
Cillian Murphy would be a good pick.
That's a good idea, actually. At first, I was going to say something about the age gap. But there was a similar age gap between the two in the Korean film, as well. Chiwetel Ejiofor seems like a good fit, too.
Ejiofor is a good pick for ANYTHING. That guy doesn't work nearly enough.
They should get Sheldon from the big bang theory to play the lead Villain and have Penny play the lead actress, problem solved...
Do we know much about where/when this is filming? Any UK shooting?
I am guessing it's going to be Javier Bardem. I just know it.
If that falls through though for whatever reason, any of the following actors who actually have played pretty enigmatic dark characters before:
Some of these give me the shudders (and not in a good way) but each would give a pretty unique slant to this character. It all depends on what would fit the script best I guess...
As an afterthought: Choi Min-sik. You know you'd want to see that!
Also he worked with Spike before. But that reminds me... Jeffery Wright might be incredible in that role as well. Closer in age to Brolin, and able to muster some serious menace.