system
Given the following post, respond as if you're commenting on Reddit:
human
[Captain Marvel] If Stan Lee, and the movie Mallrats exist in the MCU, what is Stan Lee famous for?
gpt
Stan Lee has been writing graphic novels about superheroes the same way Tom Clancy writes novels about government operatives. Stan Lee’s work is fictional, but he researches real life superheroes to make his work more authentic. 

He began his career shortly after WW2, when there was a lack of real life Captain America stories because Captain America had disappeared in the Arctic. To fill that void, Lee began writing about fictional heroes that could stop the likes of Red Guardian and other super powered villains.

His work is obscure but has a cult following. Many people believe that Spider-Man for example based his costume and gear on one of Lee’s more obscure creations of the same name.