Medea's relentless pursuit of vengeance is legendary. She is driven by a passionate desire to right the wrongs done to her and sacrifices even her own children in the pursuit of satisfaction. Medea shows audiences the horror that can come when a person lets desire for revenge rule her life. Euripides's play helped pave the way for many later revenge tragedies, from the numerous Spanish revenge dramas to Shakespeare's Hamlet.
Medea is a cautionary tale on the horrors that revenge can cause.
Medea's lust for revenge makes her an unsympathetic character.