The X-Men are a superhero team in American comic books published by Marvel Comics. Created by writer/editor Stan Lee and artist/co-plotter Jack Kirby, the team first appeared in The X-Men #1. Although initially cancelled in 1970 due to low sales, following its 1975 revival and subsequent direction under writer Chris Claremont, it became one of Marvel Comics's most recognizable and successful franchises. The X-Men title may refer to the superhero team itself, the eponymous comic series, or the broader franchise, which includes various solo titles and team books, such as the New Mutants, Excalibur, and X-Force.