Some of the characters chosen to be Apocalypse's Horsemen in X-Men: Apocalypse are new to the role having never done it in comic books, but producer Simon Kinberg has revealed that in early versions of the film script there was another even more surprising mutant in Psylocke's place: Charles Xavier.
"The one person we didn’t know was Psylocke, and the reason why is because originally in the script we sort of… I don’t know why we made this decision, but we knew that Professor X was abducted in the middle of the movie, and we thought that almost counted as a fourth Horseman," Kinberg told Cinemablend. "And so that’s the way we constructed the original draft of the script. There wasn’t going to be a fourth one. The ‘surprise’ was that Xavier was the fourth Horseman. And then when we were working on the script, Bryan and I at one particular point – pretty late in the process – said, ‘He’s not really a Horseman – he’s not doing anything in the third act of the movie.’"
Once they decided Xavier wouldn't be a proper fit as a Horsemen, Kinberg and director Bryan Singer looked to the comic books for a suitable replacement - and ended up finding Psylocke and actress Olivia Munn.
"We started talking about who that would be, and just literally looked at the list of different Horsemen over the history of the comics, and Psylocke was the one we thought was the most intriguing," Kinberg continued. "And, ironically, or as fate would have it, I had just met with Olivia Munn about Deadpool - like a week or two before. And Bryan and I were up in Montreal, and I said, ‘You know, Olivia Munn could be an interesting Psylocke,’ so we went on the internet and Googled her images. And one of the first things that popped up was a piece of fan art of Olivia as Psylocke."
It's unclear which specific piece of fan art Kinberg is referring to, but the actress has been linked to the character by fans for years going back to her hosting of G4's Attack of the Show.
X-Men: Apocalypse opens in theaters May 27.