"It was April 1, April Fool's Day. I was on set working on something and then this unknown number called me, and I don't usually pick up unknown numbers," he began. "I kept shooting, and then, an hour or two later, I finally looked at my voicemail, clicked on it, and it was Kevin. He was like, 'Hey, we're trying to reach you. Just want to let you know that we'd love to do this with you. We'd love for you to play James 'Bucky' Barnes. Give me a call back.' "He was very casual about it all." The star then continued: "It was a really crazy day but it was one of those days when there is nothing better than being on set and already working on a job and you know you have something else coming up.