The mythical hero known for his journey to the underworld to rescue his wife is Orpheus. In Greek mythology, Orpheus descends into the Underworld to retrieve his beloved Eurydice, showcasing the power of love and the realm of the dead. His tale emphasizes themes of devotion, loss, and the battles against fate. Despite his enchanting music, which sways even the hearts of the dead, Orpheus ultimately fails to bring Eurydice back to the living world, highlighting the fragility of life and love.