The concept of duality in hero myths signifies the interplay between two opposing forces, such as good and evil, light and darkness, or life and death. Heroes often navigate these dualities, embodying both traits as they confront challenges. This theme highlights the complexity of human nature, suggesting that every hero has flaws and virtues. By balancing these opposing elements, the hero often achieves growth and understanding, making sacrifices along their journey. Duality enhances the narrative, driving home the idea that true heroism is not linear but rather exists within a spectrum of moral choices.