"Ant-Man" director Peyton Reed provided more details about the Marvel Cinematic Universe's new quantum realm, how that Avengers cameo came to be, the chances of seeing an "Ant-Man" sequel and more in a new interview with Uproxx. Some of his responses contain spoilers, so read on with caution.

In one comment, Reed confirmed that the quantum realm is actually the MCU's version of the microverse, which is something that some fans have already theorized: "Well, I came on about the same time that Adam McKay and Rudd were doing rewrites. And I've known McKay for some time and we talked on the phone and we were both really jazzed about the idea of, in the third act, in a movie in which we will have seen shrinking a bunch, let's take it even further in the third act and introduce what, in the comics, was the microverse, in what we call the quantum realm. Creating this moment of self-sacrifice where he has to go into the quantum realm to save his daughter, that was something that was never in those drafts that Adam and I brought to it."

For the microverse sequences, he drew inspiration from films that frightened him as a child. "It owes a little bit to '2001,' and then there's a 'The Twilight Zone' episode that Richard Matheson wrote called 'Little Girl Lost,' where a little girl sort of falls into the wall. Something opens up and she's in this whole other dimension. And it freaked me out as a kid, and I love the idea, so we did an inverse version of that where the dad is now in there and the daughter is back in reality. So, I love that as a science fiction concept and, of course, Richard Matheson wrote 'The Incredible Shrinking Man,' so I love the Richard Matheson aspect of 'Ant Man.'"

In addition to the microverse, Reed and McKay's rewrite included a certain Avenger to the film's roster. "Adam pitched that idea of sending Scott on a mission for which he's not quite prepared and he comes up against another Marvel character. That blew my mind, and particularity with that specific character... It wasn't like, 'Oh, let's put him up against this other guy.' It served a plot point; a purpose in our story."

Though there is no sequel on Marvel Studio's previously released lineup, Reed holds out hope that they will find time for him to direct an "Ant-Man" followup. "The only thing I know about it is they released that schedule, then the 'Spider-Man' announcement came about and they sort of adjusted the schedule to allow for that. So, listen, if our movie does well and there's a desire for a sequel, I'd love to do it. I have no idea if or what that timetable would be. If it does happen, I'd love to do it."

Directed by Peyton Reed and starring Paul Rudd, Evangeline Lilly, Michael Douglas and Corey Stoll, "Ant-Man" is due out in theaters July 17.