So, the stage is set, the sides have been chosen, and war is ready to commence. Iron Man v Captain America, and their various teammates going head-to-head as well. However, while the characters might start on a certain side, it doesn't mean they're going to be staying that way. It has been rumoured that there will be a double agent working on one of the teams, who will eventually be revealed and switch allegiances to start fighting for the other side properly. Obviously there's no official confirmation on this, nor should you expect there to be, but it does seem like the sort of thing that'd be likely to happen. So, who is the most likely to be a double agent? Looking at the sides, the most obvious choices are probably Black Widow or Hawkeye. This would explain their 'fighting' against each other, but on the other hand is a little too predictable. Though none of the others jump out as natural contenders, we can probably rule out War Machine, Bucky, and Falcon, as they're presumably all too loyal to their leaders, while Sharon Carter has hardly been introduced yet. So, Scarlet Witch or The Vision then?