X-Men (comic book) X-Men (comic book) X-Men is a comic book ongoing series a namesake team of superheroes, published in various incarnations by Marvel Comics, beginning in 1963. 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", thought it would later be titled "". Volume 3 began publication in September 2010 and for most of its run featured team-ups between the X-Men and other Marvel characters, ended at issue #41
X-Men: Legacy the parent title "Uncanny X-Men", with co-writers Chris Claremont and Jim Lee, previously the penciler on "Uncanny", moving over to "X-Men", while studio mate Whilce Portacio took over penciling duties on "Uncanny". "X-Men" #1 is still the bestselling comic book of all time, with pre-order sales of over 8.1 million copies, according to Guinness Book of World Records, which presented honors to Claremont at the 2010 San Diego Comic-Con It is estimated that somewhere between 3–4 million copies were actually sold. The sales figures were generated in part by publishing the issue with five different variant covers, four of which