Never fear, true believers -- "Guardians of the Galaxy Vol. 2" will definitely have a post-credits scene. During a Facebook Q&A, director James Gunn confirmed that the film will, indeed, include this classic Marvel Studios stamp.
"Will there be an after credits scene? Yes," he revealed.
He also recounted all the facts we know about the film so far, saying, "Lots of Cosmo questions… You know, I can't really answer -- I think we've given out the people that are in 'Guardians 2' that we're going to give out so far. We know Baby Groot is in the movie -- that he's not an adult. We know that the movie takes place two 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 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. Those are the kind of the things that we know, that are out there right now, and then – as time goes on – we'll let you know a little bit more, if you want to pay attention. And if you don't, don't read my feed, please, and don't watch the trailers, etc, because we don't want you to know too much if you don't want to know that, so it's up to you."
As to why he changed Drax's skin color from green to grey, he explained, "I just didn't want to have a bunch of green characters. I wanted the people to be different colors. I think that it's also very important that the characters in the movie – the initial Guardians, the initial five – were very singular, and Drax is from a different place than Gamora is, so he's gray, she's green. Blue people are a little more common, because most Kree – most of them are blue."
"Drax from the MCU [Marvel Cinematic Universe] is different," he went on. "He has a different origin story than Drax in the 616 [Main Marvel Universe], as do all of the characters. When I started working with Marvel, I'd been a lifelong reader of comic books. I love the 616 universe and I loved the 'Ultimates' universe and I really looked at becoming part of the MCU as creating sort of an alternate universe. A lot of the same archetypes and characters that are in the comics, but they have different origins, different backgrounds, slightly different places, in the same way that the 'Ultimates' universe was to the 616 universe originally."