X-Men is a comic book ongoing series featuring the titular namesake team of superheroes, published in various incarnations by Marvel Comics, beginning in 1963. During its revival under writer Chris Claremont, the first series was eventually renamed The Uncanny X-Men with issue #114 (October 1978). In 1991 a second companion series debuted, marking the first time that more than one X-Men series would be published. This series took the simpler, earlier name X-Men, though from 2001 until 2004 it became the flagship title of the X-Men franchise and was published as New X-Men. The title then was briefly reverted to its original name but then subsequently renamed X-Men: Legacy.