Lee’s legacy has long been solidified. In his time as the president and chairman of Marvel Comics in the early to mid-1960s, he co-created superheroes including Spider-Man, the Fantastic Four, Black Panther, Iron Man, the X-Men and the Avengers, characters which now dominate pop culture and headline multi-billion-dollar film franchises. The Marvel Cinematic Universe alone has grossed nearly $18 billion globally while turning Lee’s creations—and Lee himself—into household names. The comics’ legend, who pocketed $10 million in Marvel’s $4 billion sale to Disney in 2010 and cameos in almost every Marvel blockbuster, is estimated to be worth between $50 million and $70 million. He is an icon, as revered among comic-book geeks as the fictional crusaders he helped invent. He was also a regular, reliably charismatic fixture of the convention circuit until the aforementioned bout of pneumonia that sidelined him earlier this year.