Tony Stark can be arrogant, reckless and exhausting. He interrupts people, flaunts his wealth and often assumes he is the smartest person in any room. Yet those flaws help explain why audiences love him. Beneath the armor and sarcastic remarks is a man struggling to become better than he used to be. When Robert Downey Jr. introduced the character in Marvel’s Iron Man in 2008, Stark offered a different kind of superhero. He was neither a humble outsider nor a solemn guardian.