In Shakespeare's tragedy, Macbeth, the characters and the roles they play are critical to its plot and theme, and therefore many of Shakespeare's characters are well developed and complex. Two of these characters are questionable protagonists, Macbeth, and his wife, Lady Macbeth. They play interesting roles in the tragedy, and over the course of the play, their relationship changes and their roles are essentially switched.
             At the beginning of the play, they treat each other as equals. They have great concern for each other, as you can see when Macbeth races to tell Lady Macbeth the news about the witches, and she immediately begins to plot how to gain for her husband and his desire to be king. At this point, Lady Macbeth is the resolute, strong woman, while Macbeth is portrayed as her indecisive, cowardly husband. He does have ambition, but at this point, his conscience is stronger than his ambition. Lady Macbeth explains this characteristic of her husband in Act I, Scene v, when she says, "Yet do I fear thy nature; it is too full o' th' milk of human kindness to catch the nearest way."
             The next stage of change developing in the characters of Macbeth and Lady Macbeth is in Act II. This is the act in which Macbeth kills King Duncan. Macbeth's character change is apparent because it is obvious that he has given in to his ambition and has murdered the king. He is not entirely changed, though, because he is almost delirious after he has committed the crime. He exclaims, "Will all great Neptune's ocean wash this blood clean from my hand? No; this my hand will rather the multitudinous seas incarnadine, making the green one red." He believes that instead of the ocean cleaning his hands, his hands would turn the ocean red. Macbeth's role has changed somewhat but not entirely, since he has committed the crime but his conscience is still apparent after the murder.
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