X-51

In the final days of the 20th century, Marvel’s X-51 (1999–2000) ran for 12 issues, centering on the titular robotic hero—also known as Aaron Stack—as he navigates a world that fears and hunts him. Written primarily by Karl Bollers and Mike Higgins, with Joe Bennett on art, the series explores the Machine Man’s quest for identity and humanity against a backdrop of super-powered confrontations, including tense encounters with Peter Parker’s Spider-Man and the villainous Mysterio. This short-lived but character-driven run deepened the legacy of a cult-favorite android, bridging his Silver Age roots with a turn-of-the-millennium edge.