Rumlow is by far the most significant character on this list judging by the amount of screen time hes afforded in The Winter Soldier. Hes due to become HYDRA henchman Crossbones at some point early on in Civil War, gaining the ability to generate energy beams and blast foes into next week with them. That, along with the fact that the foreshadowing of his importance to the franchise as Crossbones was so obvious - oh, I wonder why the camera is lingering so long on the badly burned body of this man who had only a tangential connection to the plot - might make you think that hes elevated above the minor character bracket. Well, youd be wrong. On the grounds that he doesnt really affect the action a great deal in The Winter Soldier - hes more like a stand-in punchbag for the Cap to work on while Alexander Pierce is busy doing other things - and as its only implied at the very, very end of the film that his story isnt over, the average viewer wouldnt necessarily assume he was that big a deal. However, The Winter Soldier was, from the beginning, intended as an origins story for Crossbones, and as Grillos already said: It's obvious Rumlow is covered in rubble and burned to crisp at the end, but you see he's still there. They don't do that for no reason. Who do you think will be most important in Captain America: Civil War? Share your thoughts below in the comments thread.