The character Iago in William Shakespeare's play 'OTHELLO' is a manipulative and deceitful individual. He is the antagonist of the play, and is responsible for the downfall of OTHELLO. Iago is a Machiavellian figure who uses his cunning and intelligence to manipulate the other characters in the play. He is a master of deception and is able to deceive even the most astute characters. Iago is a complex character who is driven by his own personal vendetta against OTHELLO. He is a villainous figure who is ultimately responsible for the tragedy that befalls the characters in the play.