Of course, if Apocalypse is around, Mr. Sinister is often not far behind. A Victorian-era scientist, Sinister was obsessed with evolution and made a deal with Apocalypse, which granted Sinister virtual immortality. For decades, Sinister has been working behind the scenes, trying to control mutant evolution. Hes also developed a grudge against Apocalypse and seeks to destroy him. And Sinister believes only the offspring of Scott Summers and Jean Grey (Cable) is capable of doing such a thing. Like Apocalypse, Sinister was also created in the 80s. But despite their relatively short time in existence in comparison to other X-Men villains, both Sinister and Apocalypse have risen to become two of the teams arch-enemies, on par with Magneto himself. It seemed like it would only be a matter of time before Apocalypse turned up in the movies and now that he is, the stage could also be set for Sinisters debut. Sinister could serve a number of different functions in X-Men: Apocalypse. For one, he could be presented as one of Apocalypses minions, biding his time and learning what he can, waiting for his moment. Or he might be an unlikely ally of the X-Mens in order to eliminate Apocalypse from the field.