Iago, MACBETH, and OTHELLO are all characters from the works of William Shakespeare. Iago is a villainous character from the play 'OTHELLO', who manipulates the other characters in order to achieve his own ends. MACBETH is the protagonist of the play 'MACBETH', who is driven by ambition and ultimately succumbs to his own guilt and paranoia. OTHELLO is the titular character of the play 'OTHELLO', a Moorish general whose life is destroyed by Iago's machinations.