They were based on characters in Scottish history who lived about 600 years before Shakespeare.
researched the character of Macbeth
There is no narrator in Macbeth. It is a play told by the numerous characters.
The historical tragedies- such as Macbeth and more to the point, Julius Caesar!
over ambition- greed
Probably
Banquo and Macbeth. And the other witches, of course.
Macbeth caused it, Lady Macbeth proposed it, the stewards were killed for it, and the king's sons took the blame for it.
Seyton was loyal to Macbeth right to the very end.
The three witches.
There are a bunch of witches and a ghost.
The Witches.
The theme of power in Macbeth shows how characters like Macbeth and Lady Macbeth become consumed by their desire for power, leading to their downfall. Their actions to gain and maintain power result in chaos and tragedy in the play.