Macbeth is the tragic hero of this play he's the kind of man that will get the job done because according ton the play the king has a lot of respect for him which means that he is also loyal his role at act 1 is to capture the traitor cawdor and execute him, but he changes after knowing what awaits him in the future.
Weird sisters scene with Macbeth
lady Macbeth there is not much to know about her but what we know is that she is a women that likes to control and manipulate she showed her true colors once Macbeth told her what his future awaits him and what he has to do to make that future a reality. her role is to help Macbeth achieve his goal by killing king Duncan.
lady Macbeth threat to Macbeth
king Duncan unfortunately he is the victim of this play and the target but as his personality goes i say he has sympathy for people and a good leader this was shown when they deliver the news that the traitor was executed he still respected him even doe that the traitor betrayed him this shows that he has a good heart.
Scene of choice
near a place in the battle field Macbeth meets the 3 witches and they tell him his future that he is destined to become king he couldn't believe it at first but eventually that future invaded his mind and changed him
once Macbeth and his wife were alone they start talking how they are going to kill king Duncan Macbeth was having second thoughts about killing him this made his wife upset and threat him if he didn't do it she would let her son die.
once Macbeth ans Banquo get back to deliver the news that everything went successful he mentions Malcolm the prince this made Macbeth upset knowing that there was someone else in line for the throne. because then his future wouldn't come true.