Iago is the villain in William Shakespeare's play Othello. He is a manipulative and deceitful character who plots to ruin the life of the protagonist, Othello. Iago is a master of manipulation and uses his skills to manipulate the other characters in the play. He is also a master of disguise and is able to hide his true intentions from the other characters. Iago is a complex character who is driven by jealousy and a desire for revenge.