X-Men: Day of the Atom
Marvel · 2005 · 1 issue
About the series
In this 2005 Marvel one-shot, the X-Men face a cosmic crisis when the source of their mutant powers—the X-Gene—is threatened by an ancient, vengeful entity from the dawn of the universe. Writer Chris Claremont and artist Dave Cockrum, legends of the X-Men mythos, reunite to explore the very foundation of mutation against a backdrop of interstellar peril. A concise, high-stakes tale that reminds readers why the X-Men's struggle is both deeply personal and universally significant.