Frank Miller is an American comic book writer, artist, and film director best known for his dark, film noir-style comic book stories and graphic novels such as Ronin, Daredevil: Born Again, The Dark Knight Returns, Sin City, and 300. He has also directed films such as The Spirit and Sin City. Miller is one of the most influential and acclaimed creators in the comic book industry, and his works have been adapted into numerous films, television shows, and video games. He is credited with helping to bring comic books into the mainstream and revolutionizing the industry.