X-Men Forever is the name of three comic book series published by Marvel Comics featuring the mutant superhero group the X-Men. The first is a 2001 miniseries, unrelated to the others. The second and third are the work of writer Chris Claremont.
2001 series
The 2001 miniseries, written by Fabian Nicieza and Kevin Maguire, with inking by Andrew Pepoy, starred Jean Grey, Iceman, Mystique, Toad, and Juggernaut. Time travel was used as a plot device to explore the themes and history of the X-Men, and to resolve several dangling plotlines. The story takes place during several different points in the past, until they are eventually brought back to the present. The miniseries consisted of six standard-length issues.
2009 series
In February 2009, Marvel announced a second X-Men Forever, which began its run on June 10, 2009. It ran semimonthly as a regular title, set in an alternate continuity of the Marvel Universe (Earth-161).