At the beggining of the play, he was a very good friend of Macbeth and was a general of the king. he was very happy of his life, winning battles and having friends.
But when he discovers the prophecy, he became very suprised and unsure of himself.
after, when King Duncan dies and Macbeth is strangely close to the good definition of the suspect, he starts to see in Macbeth an enemy. He became a little bit afraid by Macbeth's actions as king, but is killed quickly by Macbeth's murderers.
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