While the rest of the Marvel Cinematic Universe is partying together on the set of Captain America: Civil War, the Guardians of the Galaxy must be feeling a little lonely. While they haven’t yet been integrated into the larger Marvel universe, director James Gunn is ready to expand the Guardians universe. During a Periscope chat with fans yesterday, Gunn revealed that he’s already in talks with an actor about joining Guardians of the Galaxy 2 for a major new role, a new Guardian.

There are no specifics yet on which actor Gunn was referring to or what role that person would be playing, but here's what we do know. Gunn has said that he’ll likely be adding two new members to the Guardians in the sequel. The common thinking is that one of those people would be Yondu (played by Michael Rooker), who was actually a member of the team in the comics. The other would be a new character, one that Gunn has previously described as his “favorite”:

Gunn previously told Screenrant, “One of my true hopes is that we can have at least two women in the next iteration of the Guardians,” so it looks likely that this new character is actually a woman. Could it be Phyla-Vell, aka Quasar? This would be a truly progressive choice, as Phyla-Vell is a lesbian. To be able to have a gay superhero in a Marvel movie would be a huge step forward for diversity in big-budget blockbusters. Whether or not they'll actually do it, remains to be seen.

This is a Marvel movie after all, so it will need a new villain. We’ve speculated previously on who that villain could be, but some possibilities include Korvac and Adam Warlock/The Magus. There is no clear cut, obvious choice for the next Guardians villain (Annihilus would be great, but his rights are owned by Fox), but Adam Warlock is likely going to have to be introduced at some point before Avengers: Infinity War and we did see his empty cocoon at the end of Guardians.

Another major character we know is joining the ranks of Guardians of the Galaxy 2 is Peter Quill’s father. Gunn has previously said that he won’t be following comic book canon, so don’t expect to see J’son of Spartax in this movie. Gunn is rewriting the comics history a little bit with a new character, though we still don’t know who that is. (Starfox?)

If Gunn is already talking to actors about roles in the film, expect casting news to start leaking out later this year in advance of an early 2016 shoot.

Guardians of the Galaxy 2 opens on May 5, 2017.

Check Out the Coolest Marvel Movie Easter Eggs

More From ScreenCrush