Michael Madsen, who played "Mr Blonde" in Reservoir Dogs is in talks to have a role in Bond 20. The character he plays is below, and is a spoiler, so please highlight to read:
Michael Madsen will play the role of Falco, a rogue CIA agent, if he gets the role. No more is known about the character. Will he be an ally of Bond’s or an adversary? This is all being discussed in the discussion topic listed below.