In X-Men: Apocalypse, there will be two factions of mutants facing off against each other: Professor Charles Xavier’s X-Men, consisting of his "First Class" allies and his younger students, and Apocalypse and his Four Horsemen. Of course, the world is a big place, and not every mutant will fall into those two categories. Case in point- the new trailer released today featured an Easter Egg referencing an underground group that has been part of the X-Men world for decades: The Morlocks.

Early in the preview, there’s a moment where a hooded Apocalypse enters a dark room where two figures are already waiting. The mohawk automatically identifies one of them as the young Storm, played by Alexandra Shipp, but the man with the bald head looks like Morlock member Caliban. Take a glance for yourself below.

X-Men Apocalypse Caliban

When Empire asked director Bryan Singer if this is Caliban during their breakdown of the trailer, here’s what he said:
Caliban’s bald and has funky eyes. He’s a great character. Really cool.

One of Singer’s behind-the-scenes photos from earlier in the year showed the production shooting "Caliban’s place of business," so the bald-headed mutant will indeed be playing some kind of role in the 2016 blockbuster. Whether we’ll see any other Morlocks in the movie is uncertain but, like in the comics, they’ll presumably be made of mutants who are outcasts from normal society. As for Caliban, he is capable of detecting any mutant presence within a 25 mile radius, which made him the group’s prime recruiter in the lore.

Caliban has also been a member of the X-Men, X-Force and X-Factor since being introduced in 1981, and was briefly transformed by Apocalypse into the Horsemen Death. However, since all of the Horsemen spots are taken in X-Men: Apocalypse (Storm, Magneto, Psylocke and Angel), we presumably won’t see him turn monstrous this time.

The Morlocks were previously adapted for 2006’s X-Men: The Last Stand, although they were called The Omegas. Magneto and Pyro recruited them to help on their mission of mutant superiority after the cure was released. Just like in the comics, Callisto was the leader, although in addition to super speed, she was also given Caliban’s location power. After appearing in animated shows like X-Men: The Animated Series and X-Men: Evolution, it is finally Caliban’s chance to shine in live action. It’s unclear why Apocalypse will be meeting with him, but taking his power into account, perhaps the ancient Egyptian powerhouse wants him to find more mutants to recruit to his cause.

X-Men: Apocalypse hits theaters on May 27, 2016.
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