 Sophocles is credited with skillfully developing irony as a literary technique, most famously in his play "Oedipus Rex".Euripedes, conversely, used plays to challenge societal norms and mores—a hallmark of much of Western literature for the next 2,300 years and beyond—and his works such as "Medea", "The Bacchae" and "The Trojan Women" are still notable for their ability to challenge our perceptions of propriety, gender, and war.Aristophanes, a comic playwright, defines and shapes the idea of comedy almost as Aeschylus had shaped tragedy as an art form—Aristophanes' most famous plays include the "Lysistrata" and "The Frogs".