Lúthien is a central character in J.R.R. Tolkien's legendarium, particularly in "The Silmarillion." She is an Elven princess of Doriath, the daughter of Thingol and Melian. Lúthien is renowned for her beauty, grace, and powerful singing, which can enchant all living beings. Her story is one of love and sacrifice, as she falls in love with the mortal man Beren. Lúthien's quest to save Beren from the dark lord Morgoth is a pivotal part of her narrative. Together, they face numerous challenges, including infiltrating Angband, Morgoth's fortress. Their love ultimately leads to significant consequences for both Elves and Men, making Lúthien a symbol of hope and resilience in Tolkien's mythology.