Frank Miller is a renowned American comic book writer, artist, and film director, best known for his influential works in the comic book industry. His notable creations include Sin City and The Dark Knight Returns, which have left a lasting impact on the genre and inspired numerous adaptations in film and television. Miller's distinctive style combines gritty storytelling with striking visuals, often exploring themes of morality and justice. His work has not only shaped the landscape of modern comics but has also garnered a dedicated fanbase, making him a pivotal figure in the evolution of graphic novels.