'Guardians of the Galaxy Vol. 2': James Gunn Teases Sylvester Stallone and Michael Rosenbaum's 'Important' Roles

Facebook/guardiansofthegalaxy'Guardians of the Galaxy Vol. 2' premieres May 5.

"Guardians of the Galaxy Vol. 2" will see the return of Chris Pratt's Star-Lord and his band of misfits. And while it is already known that a few new faces--Kurt Russell, Pom Klementieff and Elizabeth Debicki--will be joining the mix, director James Gunn recently dropped news of two more people who have key roles.

While spreaking on "The Adam Carolla Show" podcast (via Entertainment Weekly), Gunn revealed that Sylvester Stallone and Michael Rosenbaum will also be appearing in the sequel to the 2014 hit. Additionally, the characters they play are significant in the overall MCU as well.

"We do have a couple of characters who are very important to the Marvel universe, who are going to make their debut in 'Guardians Vol. 2,' that people don't know about," he revealed. "And Sylvester Stallone plays one of these characters... But I will say that my friend Michael Rosenbaum also has a pretty decent role in the movie as well and it sort of works in tandem with Sly's character."

Right now, not much else is known about their roles in the film or to what extent their involvement will be. Fans of either actor are definitely keeping their fingers crossed, though. After all, there is going to be a third film. This much was confirmed by Gunn while speaking to Complex.

As for how Star-Lord and his team figure into the bigger story in "Infinity War," Gunn revealed that the group's part is definitely "integral." It goes without saying that "Avengers: Infinity War" will be the most star-studded film in Marvel history, so dividing up screen time among all of the superheroes will certainly be a challenge.

Fans will have to wait a while before they can see "Guardians of the Galaxy Vol. 2," though, since the movie is not set to premiere in U.S. theaters until May 5. For now, fans will have to settle for the trailer, which may be the final one.