Madame Masque

Few Marvel villains carry themselves with the cold elegance of Madame Masque, who made her entrance in Iron Man #17 back in 1969, emerging from the fertile Silver Age as one of the most distinctive antagonists in the House of Ideas. Over more than five decades — a remarkable 57-year span that stretches from the Nixon era to the present day — she has remained a fixture of Marvel's upper tier, appearing across Invincible Iron Man, Iron Man, and even The Amazing Spider-Man, sharing pages with the likes of Tony Stark, Captain America, and Spider-Man himself. That kind of staying power, including at least one collector-recognized key issue, speaks to a character who has genuinely earned her place in the Marvel canon rather than simply inherited it. If you're building out your Iron Man reading list, Madame Masque is essential — a figure of mystery and menace who has shadowed Marvel's greatest stories for generations.