The X-Men have had an excellent series of films, so I will be going over which characters appear in the most X-Men films.

Due to X-Men having such a large cast, they often have to resort to certain characters just getting cameos. In order to make things simpler, I will be excluding cameos from the results. The one exception to this rule is Wolverine in X-Men: Apocalypse, because his one scene in the film is a lengthy part of the film instead of just a quick cameo.

The X-Men films include the following films:

1. X-Men (2000)
2. X2: X-Men United (2003)
3. X-Men: The Last Stand (2006)
4. X-Men: First Class (2011)
5. X-Men: Days of Future Past (2014)
6. X-Men: Apocalypse (2016)
7. X-Men: Dark Phoenix (2019)

Spin-off films include the following films:

1. X-Men Origins: Wolverine (2009)
2. The Wolverine (2013)
3. Deadpool (2016)
4. Logan (2017)
5. Deadpool 2 (2018)
6. New Mutants (2020)

Nightcrawler, Iceman, Quicksilver and Deadpool bintang in three of the films. Nightcrawler appeared in X2, Apocalypse and Dark Phoenix, Iceman briefly appears in X-Men and stars in X2, The Last Stand and the director's cut of Days of Future Past. Quicksilver appears in the three sequels to First Class. Deadpool appears in X-Men Origins: Wolverine and both Deadpool films.

William Stryker appears in X2, X-Men Origins: Wolverine, Days of Future Past and Apocalypse. Rogue stars in the original trilogy and the director's cut of Days of Future Past.

Beast appears in five of the X-Men films. He didn't appear in the first two films, but he appeared in all of the films that followed it.

Jean Grey and Cyclops bintang in five of the X-Men films (the original trilogy, Apocalypse and Dark Phoenix). Jean Grey also appears in The Wolverine, while Cyclops also appears in X-Men Origins: Wolverine. Other than First Class, Storm stars in all of the X-Men films.

Magneto and Mystique appear in all seven X-Men films.

With the exception of Dark Phoenix, Wolverine appears in all of the X-Men films. He stars in the original trilogy and Days of Future Past. He has a quick cameo in First Class and a lengthy appearance in Apocalypse. He also stars in all three Wolverine films. Professor X appears in all seven X-Men films. He also appears in Logan.

Overall:

Characters that appear in three films: Deadpool, Nightcrawler, Iceman and Quicksilver

Character that appeared in four films: Rogue and William Stryker

Character that appears in five films: Beast

Characters that appear in six films: Storm, Jean Grey and Cyclops

Characters that appeared in seven films: Magneto and Mystique

Characters that appear in eight films: Wolverine and Professor X