Romanian-American actor Sebastian Stan is reprising the role of Bucky Barnes A.K.A. the Winter Soldier for the fourth time in next year's "Avengers: Infinity War," where he joins his best bud Captain America (Chris Evans) to save the world from Thanos (Josh Brolin). The 35-year old, who is also known for his roles in Jonathan Demme's "Ricki and the Flash," Ridley Scott's "The Martian," and Bryan Buckley's "The Bronze" is returning as the Avenger to fight Thanos when he threatens to destroy the world. The actor recently opened up about working with directors Joe and Anthony Russo again for the upcoming blockbuster, sharing that it wasn't a stressful experience at all, despite the culmination of almost all of Marvel's superheroes to date.

Actor was still starstruck

Sebastian Stan told Collider in a new interview that the set of "Avengers: Infinity War" was "kind of loose and relaxed," but he would still get starstruck when he would meet other Marvel superstars. While he didn't really indicate which actors or actresses he felt starstruck towards, he did share that "You’re always like ‘oh, so and so walked by me’—it’s always a little bit like a double take." Nonetheless, he admitted that "everyone's just having a good time" on set. In fact, "Guardians of the Galaxy" actor Dave Bautista, who plays Drax in the film and will reprise his role in the upcoming "Infinity War," was so grateful to have met and worked with Robert Downey Jr.

, who once again reprises his role as Tony Stark A.K.A. Iron Man.

Stan praises the Russo brothers

This isn't the first time Sebastian Stan works with the Russo brothers, as both Joe and Anthony were also at the helm for "Captain America: The Winter Soldier" and "Captain America: Civil War." In the latter, Stan's Bucky Barnes submitted himself for cryogenic sleep in Black Panther's Wakanda until they find a cure for his brainwashing so that he wouldn't be used as a weapon to hurt other people.

He will be called to arms once again when the Avengers have to assemble and face the Mad Titan Thanos in "Avengers: Infinity War."

'Infinity War' actor hasn't read the script despite filming

While Sebastian Stan has concluded filming his scenes for "Avengers: Infinity War," he admitted that he hasn't read the entire script just yet. reported that according to the actor, he was unaware of the storyline of the entire film because he didn't read the script at all. This is mostly because Marvel remains secretive of the plot of what they hope would be the biggest films of next year. Stan explained, "There's just an element of trust, it's a family system and at this point...between the writers and the Russos. I feel like they know very well what I'm going to be bringing."

"Avengers: Infinity War" opens on May 4, 2018.