Doc Savage is a fictional character originally published in American pulp magazines during the 1930s and 1940s. He was created by publisher Henry W. Ralston and editor John L. Nanovic at Street and Smith Publications, with additional material contributed by the series' main writer, Lester Dent.
The heroic-adventure character would go on to appear in several other media, including radio, film, and comic books, with his adventures reprinted for modern-day audiences in series of paperback books. Into the 21st century, Doc Savage has remained a nostalgic icon in the U.S., referenced in novels and in popular culture.
Shane Black has this to say about the upcoming movie.
We’re shooting it as though it’s in the 30s, including all the Capra-esque elements of 1930s films like You Can’t Take It With You. The idea of ‘What if Jimmy Stewart were a stone-cold killer?’ basically. It’s that kind of combination which we enjoy. Doc Savage is a personal film to me. It’s a 1930s pulp character so it hasn’t been around for 75 years or so, but people if they’re introduced to it they’ll get to know, hopefully, what I came to love as a kid. I’ve read those series for 43 years and always wanted to figure out how to crack it.