"With Batman, you've got a character that you can describe in just a few seconds: His parents were murdered by criminals; he's warring on crime for the rest of his life," Miller explained in the documentary "Comic Book Confidential." "He was created in 1938, and the character was just ruthless in his methods, terrifying to criminals. Over the years, that got softened and softened, because people started thinking that comics had to be just for kids... and Batman had to be made much nicer. And eventually, no kid could relate to him anymore."