An evil company kills everyone.
In the drama,though Macbeth has a great mind full of humanity,kindness, love and a great respect for everyone and has a sense of acknowledgement. So he is a great hero.
But guided by his weakened wife he was suppressed to murder Duncan due to his hot and oppressed head. But in general Macbeth is a great hero.
Such type of behavior also make lady Macbeth suffering somnambulism and put a death.