<Li> Anthony Mackie as Sam Wilson / Falcon: A former pararescueman trained by the military in aerial combat using a specially designed wing pack . About the role, Mackie said "(Wilson is) a really smart guy who went through major military training and becomes a tactical leader ." Remarking, "He's the first African - American superhero . It makes me feel all the work I've done has been paying off . I have a son, nephews and nieces, and I love the idea that they can dress up as the Falcon on Halloween . They now have someone they can idolize . That's a huge honor for me ." Marvel, who cast Mackie because of his "energy and sense of fun," did not let him read a script before signing on . Mackie spent five months doing two - a-day workouts and eating an 11,000 calorie per day diet to get into shape for the role . Commenting on Rogers' relationship with Wilson, Evans said, "Meeting Mackie's character, he used to serve, now he works at the VA counseling guys who come home with PTSD--they connect on that level . I think they're both wounded warriors who don't bleed on other people . Cap has no one to bleed on . I think Mackie knows how to handle people like that....Sometimes when things are bad, trusting a stranger is the way to go ." </Li> <Li> Cobie Smulders as Maria Hill: A high - ranking S.H.I.E.L.D. agent who works closely with Nick Fury . Smulders said she performed some of her own stunts in the film, explaining, "I try to do my own stunts whenever I can . You're only allowed to do certain stunts . There is an amazing team of stunt people that do most of the work in this film . But, I studied a lot of tae kwon do . I also did a lot of training just with weapons because I'm not very comfortable around guns . I had to get comfortable because that's my character's thing...I like to get really physical so I feel empowered when I am on set and even though you don't see it on screen, maybe I am taking people out that you don't see off camera ." </Li> <Li> Frank Grillo as Brock Rumlow: Commander of S.H.I.E.L.D.'s counter-terrorism S.T.R.I.K.E. team . About the character, Grillo said, "He is a bad - ass guy . (He) pretty much beats the shit out of everyone in the movie and that's really it ." Regarding Rumlow's alter ego, Grillo said, "Very early on the Russos said,' Look, this is an origin film for this character . We're gonna discover who this is and this is a big movie with a lot of moving parts, but we're gonna discover you in this film and, you know, here's the information about who Brock Rumlow turns into and blah, blah, blah .' And so we've had multiple discussions about what comes after that, that thing . So, you know, 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 ." </Li> <Li> Emily VanCamp as Sharon Carter / Agent 13: A S.H.I.E.L.D. agent assigned to guard Rogers without his knowledge . About the character, VanCamp said, "I play Agent 13 / Sharon Carter which everyone knows but we don't really touch on that in this film . We're just sort of introducing her . When we first see her we realize she's living next to Captain America...they sort of have a little thing going on and as we all know in the comic books they had a love affair off and on for years . They had a very complicated relationship . It's almost as if they are planting the seeds now . Sort of leaving room to go wherever they want to go with it ." Regarding her casting, Joe Russo said, "We wanted someone that Cap would have an immediate interest in . It had to be a strong - willed person, and we felt that Emily's work on Revenge was a great test tube for what this character could be . She's obviously very credible with physicality, she holds the screen really well, and she even looks like the character from the books ." </Li>

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