While Captain America: Civil War marks the start of Marvel's Phase 3 this Friday, May also brings the end of another beloved Marvel superhero trilogy. 20th Century Fox will release the highly-anticipated X-Men: Apocalypse on May 27, closing out the studio's prequel saga that includes X-Men: First Class and X-Men: Days of Future Past. To get fans ready for this epic adventure, a new preview has been released which offers more insight on the title villain En Sabah Nur played by Oscar Isaac.

Director Bryan Singer explains in this preview that Apocalypse was born a millenia ago, and has been obtaining powers from other mutants for thousands of years. This mutant wakes up in 1983 after having been dormant for many years, and sets off on a mission to cleanse this now corrupt civilization. The filmmaker also addressed fan concerns about Apocalypse's voice in an interview with IGN. As it turns out, the voice we heard in the first trailer will not be the final voice used in the movie. Here's what the director had to say below.

"[The first X-Men: Apocalypse trailer] was simply Oscar using his normal voice - which is wonderful; his performance is fantastic - but that was never the intention. We just needed those words to govern the first teaser. So people thought, 'Oh, wait, is that going to be his voice during the whole movie?' No, but to tell the story of the first tease we needed the voice, and I hadn't recreated the voice yet. What I'm doing is something very unique. It hasn't been done before. We're rerecording his entire performance because the suit's creaky and makes all kinds of noise, you can't really use any of it anyway. So he's being recorded in ADR using a standard Sennheiser microphone, but also with a bass mic to his right cheek and a bass drum mic to his left cheek. These two microphones have the ability to pull vocal range out of his voice that the human ear cannot hear. And I can take that vocal range that I've now recorded, and I can pull it and use it to augment his voice - and that with a little digital magic can create a voice that's both completely governed by his performance but is not natural. It ebbs and flows and moves through the movie, and changes, so he doesn't just have one single voice. He speaks with different voices depending on different moments in the film."

Since the dawn of civilization, he was worshipped as a god. Apocalypse, the first and most powerful mutant from Marvel's X-Men universe, amassed the powers of many other mutants, becoming immortal and invincible. Upon awakening after thousands of years, he is disillusioned with the world as he finds it and recruits a team of powerful mutants, including a disheartened Magneto (Michael Fassbender), to cleanse mankind and create a new world order, over which he will reign. As the fate of the Earth hangs in the balance, Raven (Jennifer Lawrence) with the help of Professor X (James McAvoy) must lead a team of young X-Men to stop their greatest nemesis and save mankind from complete destruction.

If that wasn't enough, it was also announced that 20th Century Fox UK will be hosting a global fan screening of X-Men: Apocalypse in London on Monday, May 9. More information will be released on this screening later today, so be sure to stay tuned for details on that event. In the meantime, take a look at this new preview for X-Men: Apocalypse, to get ready for its May 27 release.

Related: 5 Ways Deadpool Could Have Saved X-Men: Apocalypse