Iago is a villainous ensign from William Shakespeare's play Othello. He is a manipulative and deceitful character who plots against the protagonist, Othello, in order to gain power and wealth. Iago is often seen as one of the most complex and intriguing villains in literature. He is a master of manipulation and uses his cunning and intelligence to manipulate those around him. He is also known for his Machiavellian tactics, which involve using deception and manipulation to achieve his goals.