Iago is a central character in William Shakespeare's tragedy Othello. He is known for his cunning and manipulative nature, orchestrating the downfall of Othello through deceit and betrayal. Iago's motivations are complex, driven by jealousy and a desire for revenge, making him one of Shakespeare's most infamous villains. Throughout the play, Iago's actions reveal the darker aspects of human nature, as he exploits the weaknesses of those around him. His ability to manipulate others and create chaos ultimately leads to tragic consequences, highlighting themes of trust, jealousy, and the destructive power of lies.