Read Sebastian’s interview in its entirety over at io9.com

io9: So Bucky is like Captain America. They’re both from another time, they’re both lost in this new world. How does Bucky deal with that in this new movie?

Sebastian Stan: He doesn’t deal with it. [Laughs]. He just doesn’t deal with it.

I’m curious about the evolution of the hair.

Oh yes! Please ask me, because I’m sure people have opinions.

We’ve been drawing pictures of long hair on you for quite some time on io9. We didn’t know how it would look! How did you guys come to this conclusion of this hairstyle? Was it totally out of your hands?

You know what the funny thing is, we had the artist – Ed Brubaker — on set. I remember I was talking to him and I asked “why the long hair?” And he said, “the thing is we have long hair when you’re drawing comic books, [because it] things look more epic.” This was so funny to me because he was basically also explaining why superheroes have capes. The reason they have capes is because you can tell in a comic book that they’re flying. Or that there’s wind. So I said, “alright, so you’re telling me he has long hair because you wanted it for stylistic purposes.” It makes sense!

In the storyline basically Bucky sort of snapped a little bit. He went on a mission and he went missing for about a month, or so, in New York and they [the Russians] couldn’t find him. So he kind of walked around like a homeless person for a while. He was trying to figure out what he was doing and where he was. And during that process there was no one there giving him a haircut.

But in terms of the movie, I don’t care. You can’t approach something with “oh my god, how am I going to look with long hair,” you just do. I’m playing this part, this guy’s got long hair, I gotta have long hair. What are you gonna do. ?

Well I like it. I think it works. So what is modern-day Bucky (or Winter Soldier’s) fighting-style? He was trained to fight in World War II and then picked up by the Russians. Is there a combination of Russian kickboxing or something?

It’s actually kind of scrappy. The idea was this is the kind of guy who can kill you with a straw. He’s precise, he’s very specific with what he does. But the idea is that it’s messy. He’ll use knives… knives were always a big part of the character. There is a lot of knife work in the movie for sure. And overall brutality. He’ll kill you with whatever is closest.

Check out Sebastian’s interview in full over at MOVIEWEB.COM

It’s a testament to you as an actor, even on TV, you play these popular, memorable recurring characters. And here, we see people in the Marvel Universe get recast all the time. It had to be cool to know that you were wanted back…

Sebastian Stan: I’m so grateful, man! Before I even started on the first movie, and I listened to them describe this character, and where he goes, I wondered…God, I wish I would have know this was how it was all going to play out. But I’m glad…The whole way that all happened…Finding out, coming back around, getting another chance to further develop this character a second time, who I have become so obsessed with…I am so protective of this character, because to some extent, you live with them for quite a while. Its usually only on TV that you really live with a character, and get to add to it, and find new things…This was such a great character, and such a great opportunity to show off such a great side…Here’s what could have happened to this guy. Added onto what did happen to him in the comic books. Its like, it shows you what could happen if one emotion becomes the authority of how a person leads his life. It’s like me saying, everyone gets angry. But if you stay angry all the time, and you prey on that one emotion, and you keep flexing it like a muscle, and that’s the only muscle, you have to wonder what would happen. So, I don’t know if I’m making any sense…

No, you’re making perfect sense. It’s like that scene in the first movie, where they told Steve Rogers that the serum amplifies who you are as a person. And he was such a strong, good hearted, kind man that it allowed him to become Captain America. So, that would be amplified differently in Bucky Barnes, who is holding onto some anger…

Sebastian Stan: For sure. You also have to remember that scene in the first movie, where Steve rescues Bucky. You have to wonder, what is he rescuing him from? For all the fans that thought, ‘Well, god, I thought the guy died when he went off the cliff…’ Those people need to go back and re-watch that scene. Maybe there is a nice little clue on the wall somewhere that says this was going to happen. They are very smart. Marvel amazes me how they plan this out. It’s incredible. I find myself being constantly surprised.

Looking back at the first movie, Bucky and Steve have this neat little arc as friends. Bucky is the better soldier. He’s stronger, faster. But then Steve becomes Captain America. I don’t know if you would call it jealousy…But you do see that, wow, this guy is having a bit of a problem. But here, we see the Winter Soldier is now really giving Captain America a run for his money. Does that play into your relationship with Chris Evans?

Sebastian Stan: Chris Evans is so awesome. He is like one of my brothers. Literally, we show up, we laugh, we talk about our weekends, and then we get back to work. I give it my all, he gives it his all, and I feel so comfortable with him in terms of…You’re doing extremely physical and sometimes dangerous stuff. You’re trying to make something very realistic. So you want to have someone you are doing it with that you trust. You want to get along with the guy. You want to say, “We got each other. We’re gong to go for it this time.” The whole thing is a dance. It’s so technical. You’re trying to be improvisational in a controlled way. We’re really great friends.