Book excerpt: An Era of the Invincible The making of Marvel's household heroes It was an age of mighty heroes, misunderstood monsters, and complex villains. With the publication, in November 1961, of Fantastic Four No. 1, comics giant Marvel inaugurated a transformative era in pop culture. Through the next two decades, the iconic Hulk, Spider-Man, Iron Man, and the X-Men leapt, darted, and towered through its pages.