With “Avengers: Age of Ultron” still on the tip of Marvel fans’ tongues, filming for the next big crossover movie event has already begun. Now, a key character has posted a photo teasing the return of the Winter Soldier in “Captain America: Civil War.”

It was revealed last week that Sebastian Stan, along with a cadre of other actors, is confirmed to reprise his role as Bucky Barnes/ The Winter Soldier in the 2016 film. On Saturday, the 32-year-old actor posted a photo of himself rehearsing for a fight scene on Instagram. Many have been quick to point out that the character appears to be in the exact same clothes that he was disguised in during the post-credits scene in “Captain America: The Winter Soldier” when he visits the Smithsonian’s exhibit on Bucky Barnes.

For those that are unfamiliar, Bucky Barnes was the best friend of Steve Rogers (Chris Evans) in the first “Cap” film. He fell off a moving train and was presumed dead until it was revealed in “Winter Soldier” that he was rescued by Hydra agents, given a mind wipe and kept on ice whenever he wasn’t needed for an assassination over the years. As CinemaBlend points out, it was hinted that one of those high-profile assassinations was the father of Tony Stark (Robert Downey Jr.), Howard Stark (Dominic Cooper).

As many know, Tony Stark will appear in the third “Captain America” film to bring one of Marvel Comics’ most controversial storylines to life. “Civil War” will pit Iron Man against the star-spangled hero over the issue of hero registration. According to the film’s official plot synopsis, an international incident involving Captain America’s new team of “Avengers” results in massive collateral damage. As a result, the government steps in to institute a “system of accountability.” In the comic books, this translates to the Superhuman Registration Act, which forces all heroes to give up their secret identities to the government and stop masking themselves to the public. With all of the heroes in the Marvel Cinematic Universe about to be divided over this issue, odds are good that Rogers’ soft spot for his old friend will conflict with Iron Man’s quest for revenge against the man that murdered his father.

As MoviePilot notes, Barnes becomes essential to the comic book canon in the aftermath of the Civil War, but there’s no guarantee that directors Joe and Anthony Russo will follow the character’s trajectory exactly.

What do you think of Bucky Barnes returning to “Captain America: Civil War”? Comment below or tweet your thoughts to @TylerMcCarthy.