Originally Posted by pr0xyt0xin
and assuming we don't see any reprisals... I would like to see Controller.
Instead of mind control it could be some sort of hack/virus that allows him to Control Iron Man's suit (maybe even with Stark inside it!). That could lead to some bad press and perhaps War Machine will need to save him.
Jeffrey Dean Morgan or Javier Bardem could fit the role. I just hope RDJ, Gweneth Paltrow and Don Cheadle are still around to fill their respective shoes.
That's not a bad idea. With some reimagining, the Controller could be interesting.
Otherwise, I think Madame Masque would be the natural choice for a fourth film.