When it finally came time for the X-Men to make the transition from comics to the silver screen, the costume designers had decades-worth of material to work with. Not only were there hundreds of mutants in the X-Men universe, but they also had vibrant costumes, which were unique to each character.
Seeing Wolverine in his classic yellow and blue costume, or Rogue in her green spandex was going to be legendary, but then reality set in and someone pointed out how that might not look realistic in live action. New costumes were designed, and many characters got a complete overhaul.
For the most part, this was done very well, and it would be hard to point to a character like Professor Charles Xavier and know who he was instantly. Still, while Xavier, Mystique, and many others were copied well enough to make their comic book look transfer to live-action, not every character was as lucky.
Some were completely altered in their appearance ranging from the clothes they wore to the prosthetics and makeup used to give them their appearance. Again, these weren't terrible examples of costuming or makeup, but if you were to ask any die-hard X-Men fans about any of these ten characters, they would likely point out all the ways they don't look like their comic book counterparts.
10. Apocalypse - X-Men: Apocalypse
In the comics, En Sabah Nur, otherwise known as Apocalypse, is one of the most frightening and unusual characters to behold. He has pale grey skin and stands about seven feet tall. He also covers himself in various pieces of armor with his signature tubes connecting various parts of his body.
In addition to all that, he's absolutely ripped and has muscle groups that don't exist on a normal person outside of a comic book universe. When the live-action films were getting ready to create a cinematic version of the character, it was anybody's guess how they would go about achieving the look, but CGI was favored as the best way to go about it.
Of course, that's not how the filmmakers of X-Men: Apocalypse went about transforming Oscar Isaac into the monstrous character, opting instead for practical effects of makeup and costume design. To be fair, they did amazing work, but movie Apocalypse and comic book Apocalpyse don't look anything like one another.
They got the skin color looking right, but a lot of the signature aspects of his costume didn't match up to his character in the comics. What's more, Oscar Isaac stands at five feet, nine inches, which is a far cry from seven feet, which took away from what should have been a far more foreboding appearance.