Macbeth/Macduff. In many ways, Macduff serves as a foil to Macbeth to bring his actions and choices under examination from the audience. Like Macbeth, Macduff is a manly, physically strong warrior. When Macbeth hears good news, (you will be king) his first thought is to murder people to get his crown faster. In contrast, when Macduff hears horrible news, (your servants, wife and children have been brutally slaughtered) he responds by swearing an oath to god to seek his assistance and provide him with an opportunity to meet Macbeth face-to-face. Macduff even states that he would accept Macbeth's escape if God happened to will it.