Beren is a character from J.R.R. Tolkien's legendarium, primarily featured in "The Silmarillion." He is a mortal man known for his bravery and love for Lúthien, an Elven princess. Their story is a central part of the mythology, highlighting themes of love, sacrifice, and the struggle against darkness. Beren's quest involves retrieving a Silmaril, a precious jewel, from the crown of the dark lord Morgoth. His journey is marked by challenges and alliances, showcasing the interplay between mortals and immortals in Tolkien's world. Beren's legacy is significant, as he is an ancestor of Aragorn, a key character in "The Lord of the Rings."