Final Crisis: Legion of 3 Worlds

Geoff Johns and George Pérez teamed up for this 2009 DC event, a single-issue epic that brings together multiple versions of the Legion of Super-Heroes from across the multiverse. The story pits the assembled legions against a resurrected Superboy-Prime and the Legion of Super-Villains, testing the very fabric of reality and legacy. A dense, sprawling love letter to Legion lore, it's a key chapter in Johns's larger DC saga.