After the series of confirmations from cast and crew, namely director Bryan Singer, that the X-Men: First Class followup would attempt to adapt the time travel tale Days of Future Past, every actor who had a role in the X-Men trilogy was asked at every opportunity whether they’d be returning. The storyline allows the next X-Men tentpole to feature both the cast from the First Class prequel and the original trilogy via multiple timelines, and the oft complex plot device could also be used to rectify certain continuity and story issues present in the series.

Playing with the concept of time also allows the film to bring back characters who were seemingly killed off in earlier films. For the most part, almost all of the main mutant heroes from the trilogy are returning, alongside the core characters of X-Men: First Class, but there were noticeably a few absentees.

Famke Janssen – despite having a small cameo in The Wolverine – hasn’t been confirmed or announced to return for X-Men: Days of Future Past and no one’s heard from James Marsden – who was robbed of an important role and killed off in the intro of X-Men: The Last Stand– about returning either. Whether or not Jean Grey and Cyclops still have a role to play in the current state of the X-Men film universe remains to be seen, but we can safely expect there to be several guest appearances in Twentieth Century Fox’s upcoming Marvel films. We may already know about two of them.

What lays ahead can be considered possible spoilers on cameos for The Wolverine and X-Men: Days of Future Past.

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Bryan Singer posts regular behind-the-scenes photos of the set and cast of X-Men: Days of Future Past, a film which began shooting in Montreal two weeks ago. One of his more recent notable photos was that of Halle Berry suited up in a new Storm costume. According to Ray Carsillo, an editor for EGM, Berry was spotted on a flight leaving Montreal. She was sitting beside James Marsden.

Longtime Screen Rant readers may remember back during the production of X-Men: First Class a cab driver claimed to have driven Hugh Jackman from the airport to the hotel for a cameo appearance and that turned out to be 100% accurate. Needless to say, there’s a good chance Cyclops returns in some small capacity for X-Men: Days of Future Past.

Up first on Fox’s upcoming Marvel slate however, is James Mangold’s The Wolverine, a film which was originally intended to feature no other mutants outside of Hugh Jackman’s titular character and was positioned as a standalone story. In a post-Avengers world where big budget superhero films are expected to follow continuity, there’s no way Fox doesn’t take advantage of their biggest star in Hugh Jackman to at least tease what’s next for the franchise.

According to JoBlo, James Mangold and Hugh Jackman were conducting some reshoots over the weekend in a Montreal airport and the scene in question was seemingly designed to serve as a button sequence to tease X-Men: Days of Future Past. It featured Wolverine arriving at an airport- probably returning from his adventures in Japan – and time freezing as Professor X (Patrick Stewart) walks in with him. Yes, the dead professor from X-Men: The Last Stand and yes, walking. If the report proves true, it’s likely the Days of Future Past version of Professor X from an alternate post-apocalyptic future (as seen in this behind-the-scenes photo) contacting Logan.

Fans will recall at the end of X-Men 3, there’s an after-credits sequence featuring Professor X waking up in another body that he transferred his mind into – that of his braindead twin brother. This could explain Charles’ ability to again walk, should Bryan Singer choose to follow that route. The other obvious scenario is that the future depicted in film is an alternate one affected by time travel where characters thought dead can return, changed.

Bryan Singer directs X-Men: Days of Future Past with newcomers Peter Dinklage, Omar Sy, Boo Boo Stewart, Fan Bingbing and Adan Canto, along with returning stars Jennifer Lawrence, Michael Fassbender, James McAvoy, Nicholas Hoult, Patrick Stewart, Ian McKellen, Hugh Jackman, Anna Paquin, Ellen Page, Shawn Ashmore, Halle Berry, Daniel Cudmore.

The Wolverine releases July 26, 2013, X-Men: Days of Future Past on July 18, 2014.

Let me know on Twitter @rob_keyes if you want to see Cyclops return!

Sources: CBMJoBlo