Civil War: X-Men Universe

In 2007, Marvel published a single-issue tie-in to the larger "Civil War" event, focusing on the X-Men's corner of the superhero registration conflict. Written by Peter David with art by Dennis Calero, this story explores how the mutant community and its allies—including a cameo from Spider-Man—navigate the political fallout of the Superhuman Registration Act. It matters as a concise, character-driven snapshot of how the X-Men's unique perspective on persecution and secrecy shaped their response to a universe-wide crisis.