When the MCU started up with 2008’s Iron Man, looking out for a Stan Lee cameo was a common occurrence for Marvel fans, as the Avengers were introduced in origin films and the team formed.
Stan Lee is also a relevant figure himself, as he frequently appeared in cameos in film and television since 1989 in The Trial of the Incredible Hulk.
His characters are deeply embedded in popular culture, and have remained relevant for over their 60-year history.