While it has already been teased by director Bryan Singer and writer Simon Kinberg that older X-Men could be returning in younger incarnations, but which ones could show up and in what capacity?

'X-Men Apocalypse' Could Feature A Return Of 'X2' Character

One of the more important characters that could re-appear with the younger cast is Jean Grey, who was previously portrayed by Famke Janssen in the original trilogy of films.

In the comics, Cyclops and Jean returned to the X-Men some time after at the request of Storm. Storm was concerned about the mental well-being of Professor X. Xavier had been pretending to lose control in order to uncover a traitor he had sensed in the ranks of the X-Men. The traitor turned out to be a Skrull, who had replaced Wolverine.

Could Wolverine Go With A Classic Look For 'X-Men: Apocalypse?'

Apocalypse made a bid for cosmic power by assembling the "Twelve," a group of mutants who would determine the fate of their kind that included Cyclops, Phoenix, Iceman, Professor X, Storm, Magneto, The Living Monolith, Bishop, Polaris, Sunfire, Mikhail Rasputin, Nate Grey, and Cable. To secure a new host body, Apocalypse sought to collect the mutants he required to carry out his plan and siphon the energies of "The Twelve". They were wired to a machine that would channel the Twelve's awesome energies into Apocalypse, allowing him to absorb the body of Nate Grey.

As his teammates fell around him, a powerless Cyclops saved Nate and merged with the would-be conqueror to create a new evil entity. Jean detected Cyclops' psyche inside Apocalypse and prevented the X-Men from destroying him. However, he was presumed dead by most of his teammates. Only Jean and Cable refused to believe Scott had perished, at which time Cable joined the X-Men to honor his father.

Bringing back characters like Jean Grey, Cyclops, and Storm could work as both are popular characters in the series. This also allows for the franchise to introduce a few new roles like Sunfire and Nate Grey for the new series.

X-Men: Apocalypse is set to open in theaters on May 27, 2016.

Tags: X-Men Apocalypse Movies