"I really liked that it mentioned that he was doing the dirty work for Captain America. Because that means he was fighting these missions in a very different way. There was a part of him that was a stone cold killer, and I think that came from somewhere. I was interested to know where that came from… He loves Steve Rogers and Captain America. But at the same time, what are you going to do? You’re this guy that comes in a suit suddenly and things are just going to get better? Have you ever seen someone’s head blown off? I think he’s very real about certain things."
— Sebastian Stan on Bucky (x)