Ant-Man (2015)

In the summer of 2015, as superhero fatigue was setting in and Marvel's cinematic universe was reaching peak saturation, the studio took its biggest gamble yet with its smallest hero. Ant-Man, starring Paul Rudd as a cat burglar turned microscopic crusader, seemed destined for failure. The project had lost its original director Edgar Wright after eight years of development, the concept felt inherently silly even by comic book standards, and audiences appeared increasingly weary of origin stories. Yet somehow, this modestly-scaled film about a hero who can shrink to the size of an insect emerged as one of Marvel's most charming and significant entries, marking a crucial pivot point in the studio's approach to storytelling.