Brian Azzarello is an American comic book writer known for his work in the graphic novel and comic book industry. He gained significant recognition for his contributions to major publishers like DC Comics and Vertigo. Azzarello is particularly noted for his storytelling style, which often features complex characters and gritty narratives. One of his most acclaimed works is the 100 Bullets series, which received multiple awards and critical praise. He has also worked on popular characters such as Batman and Wonder Woman, bringing a unique perspective to their stories. Azzarello's writing often explores themes of morality and the human condition.