Avengers: Ultron Unleashed

Jim Shooter and George Pérez, two legendary architects of the Avengers' classic era, reunited for this single-issue Marvel one-shot from 1999. A self-contained, high-stakes confrontation, it pits Earth's Mightiest Heroes against the rogue android Ultron in a story that feels like a lost epic from their celebrated 1980s run. This comic stands as a potent, standalone snapshot of the team's core dynamic, delivered by creators who helped define it.