One of the most anticipated films of 2016 is Marvel’s Captain America: Civil War, which will not only see Ant-Man join his fellow Avengers on-screen, but will also see a battle between two of the most prominent figures in the Marvel Cinematic Universe: Captain America and Iron Man. While we know the story will not be about secret identities like in the comics, there’s still plenty that we currently do not know.

Actress Elizabeth Olsen, who plays Scarlet Witch in the MCU, recently attended TIFF to promote her upcoming film I Saw the Light, which she stars in alongside fellow Marvel actor Tom Hiddleston. While there, she was asked about Civil War and how different it felt compared to Avengers: Age of Ultron, where we saw her character debut.

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As Olsen revealed in a previous interview with, she was only on set for Civil War for about five weeks. While she wasn’t there for most of the filming, she revealed that it was a hard film to shoot.

“Even though the Ultron robots are so intensely human because of its mind, we’re actually dealing with humans this time through and through. There’s nothing scarier than something that’s like you being dangerous, so I think it’s darker and it’s fun. It’s really fun—it was so hard to shoot, but I think it’s gonna be a really interesting film.”

Olsen’s comments about the film being darker mimic those by Sebastian Stan, who recently stated fans can expect the film to be “brutal” with “serious” fight scenes.

Collider also asked Olsen about the famous stingers attached to every MCU film, and it seems fans are not the only ones eager to see what Marvel has planned for the Civil War stinger(s).

“I’m excited to see how they’re gonna end it. I wanna see what the ending shots look like because I wanna know what the ellipses is at the end of the film (laughs).”

As for whether or not we’ll see Scarlet Witch in Avengers: Infinity War Part 1 & Part 2, Olsen admitted that she currently doesn’t know. With filming set for late next year, we should start hearing rumors early next year about which cast members we can expect to see return for the two-part epic.

Captain America: Civil War is set to hit movie theaters on May 6th, 2016.

Source: Collider.