Fox's X-Men movies have been fairly divisive over the years. X-Men and X2: X-Men United were received incredibly well, while The Last Stand . . . not so much. First Class and Days of Future Past were also met with praise, but Wolverine's solo outings weren't. But with X-Men: Apocalypse, geared to bring the franchise to an even higher level, it's time we look back at the previous X-Men films. So below are some fun facts about the franchise!

X-Men (2000)



To celebrate her last day on set, Rebecca Romijn (Mystique) brought in a bottle of tequila, which she gave to her fellow cast/crew during a break in filming. Unfortunately, that day she happened to be filming the Wolverine/Mystique fight scene, and she threw up blue-colored vomit (from the chemicals in her make-up) all over Hugh Jackman.

Might as well start this list out with a bang, right? Or, in Rebecca Romijn's case: a blegh. Either way, the X-Men set sounded like an interesting place to be. Where else do you have a celebrity covered in prosthetics and makeup throw up colored vomit during a scene? Besides a Comic-Con after party, of course.

X2: X-Men United (2003)



The ice wall separating Wolverine and Stryker in their reunion in the mansion battle was real ice and weighed 3,500 lbs.

Don't even ask me how this was done. Where did they freeze it? How did they movie it? How big is the freezer? Why are these answers just making more questions?

X-Men: The Last Stand (2006)



A reflective form-fitting bodysuit was created for Daniel Cudmore to wear as Colossus. This was considered a cheaper move rather than animating Colossus' ability in CGI, as seen in the previous film.

As most fans can attest to, Daniel Cudmore's Colossus never really looked as he should have. In the comics, he has lines going horizontally across his whole body with a red and yellow costume, not some T-800 look alike. Thankfully, he looks comic-accurate in Deadpool (just like Deadpool himself), completed with CGI. But never forget Mirror Colossus. Never.

X-Men Origins: Wolverine (2009)



In the flashback to Africa, a young black girl with white hair can be seen. This is the young Ororo Monroe (Storm), the future X-Men member. This scene was removed from the final film, but appears as a deleted scene in the DVD.

The scene above appeared in the trailer for the movie, but producer Lauren Shuler Donner said her scene was cut out from the final movie. It makes sense, as it would've just been a cameo anyways. We will see Storm (played by Alexandra Shipp) in Egypt in X-Men: Apocalypse (to some extent).

X-Men: First Class (2011)



To prepare for his role as Charles Xavier, James McAvoy shaved his head...and learned that the filmmakers wanted Xavier to have a full head of hair in the prequel. Throughout the first month of filming McAvoy had to wear hair extensions.

I bet everyone can relate to this, right? When you get something you want and try to show initiative, but fall flat on your face and get pulled back on your feet by your hair (or in McAvoy's case: by the extensions).

The Wolverine (2013)

An alternate ending was filmed where Yukio presents Logan with a box that contains his yellow Wolverine mask from the comic books. The scene is presented as a bonus feature on the BluRay edition.

Most people know this, but it's damn shame it didn't make its way to the film. At the very least, she could've presented it to him and he could've turned it down in a funny way, sort of like his X-Men: First Class cameo.

X-Men: Days of Future Past (2014)



According to Peter Dinklage, Bryan Singer picked him to play Bolivar Trask because of his height: "With my dwarfism, I'm a bit of a mutant. I can't move metal or anything, but I thought of it as self-loathing. Deep down, Trask is quite sensitive about that aspect of himself."

It's an interesting way to cast a role, isn't it? Granted, most directors do look for someone who can relate to the role, but Dinklage is the role. Oddly enough, his "mutation" is never mentioned in the film.

Source: IMDb Trivia Pages (whoever makes them is a god)