Since the success of Frank Miller and Klaus Janson’s Batman: The Dark Knight Returns, the comic book industry has made the trope of older heroes coming out of retirement a staple of the industry. These stories are often riddled with powerful fan service that explains why a hero is great to begin with, and shows how, even in old age, they’ve still got it. Naturally, these tales have risen to the top of what many regard as the finest superhero stories ever told.

https://screenrant.com/best-old-man-future-hero-comics/