Trivia: With this film, Bryan Singer broke the record and became the only director to have made four movies in a single superhero franchise. Singer directed "X-Men", "X2", "X-Men: Days of Future Past" and "X-Men: Apocalypse." No other director has directed more than three films in a single superhero franchise. Singer also co-wrote and co-produced several other films in the series in addition to the four he directed.
Trivia: Just as the Fox fanfare intro finishes, the ending of the music takes a cue from X-Men, and just as the screen fades out, the 'X' in 'Fox' is last to fade away from the screen.