OK Twilight fans, we have someone to play the Volturi leader and his name is Jamie Campbell-Bower. Based on this particular picture, it appears the young British actor was born to play a vampire (probably has to do with that mess of greasy hair and the guyliner). He's like Robert Pattinson's evil twin, which is about right for this role in New Moon.
So this means that several of the important Volturi roles are filled at this point with Dakota Fanning playing Jane, a runway model in the role of Volturi vixen, and now Campbell-Bower as Caius who "forms part of the triumvirate leading the Italian-based coven of vampires." I think we still need an Aro and a Marcus, right? Maybe some Volturi wives?
What do you think of this Caius?