There are two things one needs to know regarding Director James Gunn. No. 1, he's not prone to give out spoilers, and No. 2, you should never insult his cat. Seriously, cats are sacred ground, and one should never refer to their weight. It's just not classy.
Cat comments aside, the Director of Guardians of the Galaxy Vol. 2 recently hopped onto Facebook Live for an impromptu Q&A session, and when asked about Cosmo or any other unrevealed characters, he decided to instead lay out everything that has been previously released.
"I think we've given out the people that are in Guardians 2 that we're going to give out so far, uh, which is we know Baby Groot is in the movie and that he's not an adult. We know that the movie takes place 2 months after the first movie ends. We know that Ego is the father of Peter Quill, that he's an ancient being. He's played by Kurt Russell. We know, what else do we know, we know that Mantis is in the movie. We know that Yondu and Nebula have more important roles in the film. We know that Sylvester Stallone is playing someone in the film. We don't know who. So those are kind of the things that we know that are out there right now, and as time goes on we'll let you know a little bit more."
While all of that has been heavily discussed already, there is one trinket of information that isn't common knowledge, and that is the timeline. Guardian's of the Galaxy Vol. 2 is set a mere two months after the events of the first film. That isn't truly significant until you look at the bigger Marvel Cinematic Universe, which would place the events of this sequel before Captain America: Civil War. If the film is like the original, then it won't have much effect. If it decides to intertwine more with the rest of the film universe, however, it could make things a bit murky going forward.
Guardian's of the Galaxy Vol. 2 hits theaters on May 5th, 2017.