X-Force

X-Force is an ongoing comic book series featuring the fictional superhero team of the same name, published by Marvel Comics in various incarnations beginning in 1991. Publication history X-Force Volume 1: 1991–2001 Liefeld period X-Force was created by illustrator Rob Liefeld after he started penciling The New Mutants comic book in 1989 with #86. The popularity of Liefeld's art led to him taking over the plotting duties on the book. With help from writer Fabian Nicieza, who provided the dialogue for Liefeld's plots, Liefeld transformed the New Mutants into X-Force in New Mutants #100, the book's final issue. Liefeld and Nicieza launched X-Force in August 1991. Rob Liefeld obtained the name for the series from an unknown artist at a convention a few months prior to its release. With the aid of a multiple-variant poly-bagged card, the book sold a record 5 million copies. The original line-up of the team included Boom-Boom, Cable (son of Cyclops and Madelyne Pryor), Cannonball (believed to be an External), Domino, Feral (sister of Thornn of X-Factor), Shatterstar and Warpath (brother of Thunderbird of the X-Men); Siryn (daughter of Banshee of the X-Men) was added to the team in the third issue.