The villainous queen in the Greek myth of the Trojan War is Clytemnestra. She is a formidable character known for her role in the murder of her husband, Agamemnon, upon his return from the war. Clytemnestra’s motivations stem from vengeance for the sacrifice of their daughter, Iphegenia, and her affair with Agisthus. Her actions demonstrate themes of betrayal, justice, and the consequences of vengeance. Clytemnestra’s complex character showcases the intricacies of femininity in Greek mythology and her influential role in the tragic unfolding of events related to the Trojan War.