The Greek hero who journeyed to the Underworld and returned with the love of his life is Orpheus. He ventured into the dark realm to retrieve his wife, Eurydice, who had died. His enchanted music captivated Hades and Persephone, allowing him to negotiate her return, provided he did not look back at her until they exited. However, out of despair and doubt, he turned, losing her forever. Orpheus's tale emphasizes love's power, tragedy, and the nature of loss.