SPOILER WARNING: The following article contains spoilers for "Guardians of the Galaxy Vol. 2," in theaters May 5.

If you’ve watched a movie set in the Marvel Cinematic Universe, you’ve no doubt noticed comic book visionary Stan Lee popping up in little cameo roles. For years, it’s been rumored that, rather than being silly cameos, Lee is actually portraying the same person, specifically Uatu the Watcher, a character known for appearing when world-altering events are occurring.

With "Guardians of the Galaxy Vol. 2" on the horizon, it’s been noted that Lee’s cameo will actually be a nod to the theory, with the comic creator seated amongst a group of people watching the Guardians. Kevin Feige -- Marvel Studios head honcho -- sat down to talk about the film and was asked about the cameo. Surprisingly, he acknowledged it, and even went so far as to confirm that it might not be a theory at all.

Yes, we always thought it would be fun. Stan Lee clearly exists, you know, above and apart from the reality of all the films. So the notion that he could be sitting there on a cosmic pit stop during the jump gate sequence in Guardians was something very fun – James had that idea and we shot that cameo and loved it so much, you know, you see it a couple of times in the movie. It wasn’t in for a long time and we put it back in towards the end of the process where he references that time he was a Federal Express agent – we thought it would be fun to put that in there because that really says, so wait a minute, he’s this same character who’s popped up in all these films.

For those who want to avoid spoilers for any scenes in “Guardians 2”, be sure to look away now. Lee seems to appear twice in the film, and in both scenes he seems to be speaking to a group of Watchers about his findings. According to ScreenRant, the movie version of the Watchers look similar to their comic book counterpoint, which wouldn’t make Lee a Watcher per se, but merely a friend of theirs.

While it’s unlikely for any of this to ever mean much in the MCU (Feige made sure to note that this was more of a nod to the fans then an integral part of the story), it’s good to see Marvel somewhat confirming the theory all of us have been subscribed to for some time. Lee has already filmed his cameos for “Spider-Man: Homecoming," “Thor: Ragnarok” and “Avengers: Infinity War," and with this new information being revealed, fans will have to pay extra attention to what he does in those films...