Stan Lee created several Marvel Superheroes in the Marvel Universe along with artists Jack Kirby and Steve Ditko. Lee and Kirby created popular characters such as The Hulk, Thor, Iron Man and the X-Men. Lee and Ditko created Doctor Strange and Spider-Man.
Martin Goodman founded a comic book company called Timely Publications and hired Stan Lee as an office assistant. Lee worked his way up to be hired on as an editor. When Timely Publications later became Marvel Comics, Lee was asked to create a series. Stan Lee and Jack Kirby created The Fantastic Four which helped propel Marvel into a multimillion dollar franchise.