The Emperor-Beyond-the-Sea is a character from Ursula K. Le Guin's Earthsea series, specifically referenced in "The Farthest Shore." He is depicted as a powerful and mysterious figure who rules over a realm beyond the known world, embodying themes of immortality, wisdom, and the balance of life and death. His presence serves as a catalyst for significant events in the series, particularly in the struggle against the encroaching darkness. The character symbolizes the unknown and the complexities of existence beyond the physical realm.