X-Men: Apocalypse Final Trailer - 10 Major Plots Hints

There was a fair bit going on as Raven watched at the mutant branch of Fight Club, as she helped him against Angel, and then he helped her (and there was also an appearance from Blob), but the most telling moment comes from Nightcrawler's reaction to meeting his fellow blue-skinned mutant:

"You're her!"

What does this mean, exactly? Well, Raven was one of the heroes in the events of DOFT, which were widely televised. It seems that in the decade since, while she hasn't been in the public eye, she has become a legendary figure, a hero to mutants who haven't found their place in this world, something that makes even more sense when we later see her taking on a prominent role in the ranks of the X-Men.

Of course, the other thing here is that, in the comics, Mystique is actually Nightcrawler's mother. X-Men has played around a lot with its timeline, but this might be a step too far even for this franchise.