Emily VanCamp is set to return as Sharon Carter in the first film of Marvel’s upcoming Phase Three, Captain America: Civil War, and while she can’t reveal too much about the upcoming Avengers showdown between Captain America (Chris Evans) and Iron Man (Robert Downey Jr.), it’s pretty clear whose side she’s on!

“She’s definitely Team Captain America,” VanCamp said of the conflict when she stopped by the ET offices on Tuesday. “That’s who she is within the universe, I mean, she’s always had his back.”

Sharon even gets to hop in on the front lines and do some fighting in Civil War, the 29-year-old actress revealed. “I got to do a small fight sequence with Scarlett [Johansson] which was fun,” she said. “We’re all just kind of kicking ass in those movies.”

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In the comic books, Sharon and Captain America — who VanCamp says have “similar moral compasses” — have something of a romantic history, which is complicated slightly by the fact that she is canonically the niece of “Agent” Peggy Carter (whom Cap romanced back in his pre-serum days). But will that romance ever play out in the Marvel cinematic universe?

“That’s where it all gets really tricky,” the actress admits, “because there are die-hard fans that want to see him with different people. There’s all the different camps, so hopefully people are happy with it.”

Another divisive element in the Marvel fandom is the central conflict of Civil War, which pits the former Avengers teammates against one another. VanCamp says even she was anxious to see how the battle played out.

“I sort of wondered, before I read the script, how that was going to pan out,” she admits. “But you really do understand and sort of see both sides of it. I think it was really well done.”

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The actress transitioned from the big-budget blockbuster to small indie film for her upcoming movie, The Girl in the Book, which was partially funded by a Kickstarter campaign. VanCamp told ET that keeping diversity in her projects is important to her as an artist.

“You really realize, when you come from a big movie like [Captain America], it’s amazing how difficult it is to make some of these movies,” she said. “But there’s an intimacy to doing small indie filmmaking that I love and that I crave.”

In the movie, VanCamp plays Alice, a junior book editor with a painful past, and the actress said that taking on the character who has to learn how to “respect herself again” and “become the writer she was always meant to be” was an empowering process.

“Going through those struggles as a kid — the fact that you can overcome it, you can sort of move past it and let it go and ultimately, in a strange way, forgive — I think that’s very empowering,” she said. “I think it’s also interesting to see that vulnerable side of women as well. It was interesting, as an actress, to tackle that.”

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