Explanation:
In Shakespeare’s play Othello, the main villain is Iago, a manipulative and deceitful ensign in the Venetian army. Iago is jealous of Cassio, who has been promoted over him, and seeks revenge against Othello, who has chosen Cassio as his lieutenant. Iago’s manipulation of the other characters, including Othello, his wife Desdemona, and Cassio, leads to a tragic chain of events that ultimately ends in their destruction.