The X-Men are a team of mutant superheroes, published in American comic books by Marvel Comics. Over the decades, the X-Men have featured a rotating line up composed of many characters. Notation:

Members

Original members

Recruits

1960s

1970s

1980s

1990s

2000s

2010s

2020s

Other status

Substitute X-Men teams

Eleven substitute teams that have either temporarily taken the place of the X-Men during their absence, or worked under the X-Men.

New Mutants graduate X-Men

In January 1987, the New Mutants briefly graduated to become the X-Men in Uncanny X-Men Annual #10.

Muir Island X-Men

In December 1989, during the wake of the X-Men's supposed "death" during "The Fall of the Mutants", Banshee assembled an X-Men team on Muir Island in Uncanny X-Men #254.

Phalanx invasion X-Men

In September 1993, to oppose the threat of the techno-organic alien Phalanx, an X-Men team quickly banded together in Uncanny X-Men #316.

Mannite rescue X-Men

In September 1999, after Professor X disbanded the X-Men in an attempt to expose a Skrull impostor in their ranks, Cyclops and Jean Grey formed an X-Men team to help the Mannites in Astonishing X-Men, vol. 2 #1.

Genoshan assault X-Men

In March 2001, Jean Grey assembled an X-Men team to rescue Professor X from Magneto in Uncanny X-Men #392.

Street team X-Men

In November and December 2003, an X-Men team was formed by Cyclops in the wake of Xorn's rampage through Manhattan, New York in New X-Men #149 and #150.

X-Men in training

Individuals that were once trained by the X-Men as part of younger teams of the X-Men or individually.

X-Force

In December 2007, the X-Men's strike team was formed by Cyclops in Uncanny X-Men #493, with Wolverine serving as the field leader. The team took on missions which required responses "too violent or controversial" for the X-Men to deal with directly. When Cyclops disbanded the team, Wolverine assembled a new independent team.

X-Club

In November 2008, Beast gathered a science team in Uncanny X-Men #504, to attempt to deal with the mutant birth crisis, and reverse the effects of M-Day. The team lasted until 2012.

Time-displaced X-Men

In November 2012, a team was formed when the original members of X-Men were displaced in the time in All-New X-Men #1. The team headlined both All-New X-Men from 2012 to 2017 and X-Men Blue from 2017 to 2018.

London X-Men

In July 2017, an X-Men team was formed to help Charles Xavier against the Shadow King in Astonishing X-Men, vol. 4 #1.