Filmmakers Joe and Anthony Russo were first known for creating comedic sitcoms like ?Arrested Development.? Now they are known are those behind the Avengers franchise, directing both ?Avengers: Infinity War? and ?Avengers: Endgame.? According to Comicbook.com, the brothers are already looking towards future project. One project they have coming up is a possible documentary on Stan Lee, the comic book writer behind Marvel. Anthony said the brothers not only love Lee but are fascinated by his life.