who?

Macbeth was once a thane who served gladly under the rule of king Duncan but  suddenly he had a change of heart after conversing with his wife then he turned murderer and assassinated Duncan and then he inherited the throne, but scared it would be stolen he went 1 step  further and killed his best friend banquo and his 2 sons but this drove him insane all he could think about was  the faces of those deceased