Stryfe
Since we are getting Cable (who is from the future), maybe we can also get Stryfe, a clone of Cable. Coming from the 39th century, he is more powerful than the mutant from whom he was created. Possessing a blade with the ability to harm Apocalypse himself, an armor that is basically impervious to damage, and enhanced superhuman abilities, Stryfe was actually raised by Apocalypse.
It didn’t end as planned, since he was revealed to be a clone – and this led Stryfe to be even more resentful toward those he considered to be his parents (Cyclops and Jean Grey, as well as Apocalypse). Throughout his quest, which obviously would need to span several movies, some other characters could be introduced (such as Bishop, another fan-favorite, who had just a cameo role in X-Men: Days of Future Past).
