Lady Macbeth's husband and a Scottish nobleman, the Thane of Glamis. He is made Thane of Cawdor for his bravery in battle, and becomes King of Scotland by murdering the previous King, Duncan. As Macbeth opens, Macbeth is one of the great noblemen in Scotland: valiant, loyal, and honorable. He's also ambitious, and while this ambition helps to make him the great lord he is, once he hears the weird sisters' prophecy Macbeth becomes so consumed by his desire for power that he becomes a tyrannical and violent monster who ultimately destroys himself. What's perhaps most interesting about Macbeth is that he senses the murder will lead to his own destruction even before he murders Duncan, yet his ambition is so great that he still goes through with it.