X-Men: One-Shots is a 15-book series with 15 released primary works first released in 1975 with contributions by Chris Claremont, Len Wein, Dave Cockrum, Fabian Nicieza, Scott Lobdell, Mark Waid, Dan Abnett, Ian Edginton, Alan Davis, Matt Fraction, Christopher Yost, Kieron Gillen, Skottie Young, Sam Humphries, Jonathan Hickman, Marc Guggenheim, Jim Mahfood, Gerry Duggan, Simon Spurrier, Bryan Edward Hill, Jody Houser, Aron E. Coleite, Leah Williams, Mohale Mashigo, Jorge González, Robbie Thompson, Lonnie Nadler, Zac Thompson, Ruben Diaz, Sina Grace, Tom Taylor, Duane Swierczynski, Charlamagne Tha God, Chris Sims, Chad Bowers, Ed Brisson, Matthew Rosenberg, Rainbow Rowell, Charles Soule, Tini Howard, Al Ewing, and Kelly Thompson.