Lady Macbeth -  Macbeth’s wife, a deeply ambitious woman who lusts for power and position. Early in the play she seems to be the stronger and more ruthless of the two, as she urges her husband to kill Duncan and seize the crown. After the bloodshed begins, however, Lady Macbeth falls victim to guilt and madness to an even greater degree than her husband. Her conscience affects her to such an extent that she eventually commits suicide. Interestingly, she and Macbeth are presented as being deeply in love, and many of Lady Macbeth’s speeches imply that her influence over her husband is primarily sexual. Their joint alienation from the world, occasioned by their partnership in crime, seems to strengthen the attachment that they feel to each another.