Macduff is, essentially, a minor character. However, he is arguably, the most prominent minor character in the play. Macduff is a static character, in that his loyalty to King Duncan, and righteous heirs to the throne, is unwavering. He immediately distrusts Macbeth and refuses to attend his coronation. Ultimately, Macduff becomes a focal point for Macbeth's rage and desire to protect his throne. Macduff's family is murdered by Macbeth's assassins, after Macduff flees to England to seek help from the king. Revenge dribes Macduff to eventually kill Macbeth and instill Malcolm. the rightful heir to the throne.