Crossbones will reportedly be the main villain of Captain America: Civil War.
Following the announcement that Daniel Brühl would play an antagonist in the third film, Variety's Justin Kroll revealed that Frank Grillo's character would take the lead.
Justin Kroll @krolljvar
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Beat by Marvel in that one, two things he will play villain but not main one, Crossbones still main
Robert Downey Jr will reprise his role as Tony Stark/Iron Man in the movie.
In the comic book event Civil War, the conflict arises between Steve Rogers and Stark over the Superhero Registration Act.
A report by Badass Digest claims that Sebastian Stan's Winter Soldier will also play a key role in the Marvel Studios film.
Joe and Anthony Russo are returning to directing the third Captain America film with Chris Evans in the starring role.
It will mark Chadwick Boseman's debut as Black Panther in the Marvel films.
Captain America: Civil War will be released on April 29, 2016, in the UK and May 6, 2016 in the US.