Thanatos. In Greek mythology, Thanatos was the personification of death. He was a minor figure in Greek mythology, often referred to but rarely appearing in person. His name is transliterated in Latin as Thanatus, but his equivalent in Roman mythology is Mors or Letum. Mors is sometimes erroneously identified with Orcus, whose Greek equivalent was Horkos, God of the Oath. The Greek poet Hesiod established in his Theogony that Thánatos is a son of Nyx and Erebos and twin of Hypnos. Homer also confirmed Hypnos and Thanatos as twin brothers in his epic poem, the Iliad, where they were charged by Zeus via Apollo with the swift delivery of the slain hero Sarpedon to his homeland of Lycia. Then gave him into the charge of swift messengers to carry him, of Hypnos and Thanatos, who are twin brothers, and these two presently laid him down within the rich countryside of broad Lycia. Counted among Thanatos' siblings were other negative personifications such as Geras, Oizys, Moros, Apate, Momus, Eris, Nemesis and even the Acherousian / Stygian boatman Charon. Thanatos was loosely associated with the three Moirai, particularly Atropos, who was a goddess of death in her own right. He is also occasionally specified as being exclusive to peaceful death, while the bloodthirsty Keres embodied violent death. His duties as a Guide of the Dead were sometimes superseded by Hermes Psychopompos. Conversely, Thanatos may have originated as a mere aspect of Hermes before later becoming distinct from him. The god's character is established by Hesiod in the following passage of the Theogony: And there the children of dark Night have their dwellings, Sleep and Death, awful gods. The glowing Sun never looks upon them with his beams, neither as he goes up into heaven, nor as he comes down from heaven. And the former of them roams peacefully over the earth and the sea's broad back and is kindly to men; but the other has a heart of iron, and his spirit within him is pitiless as bronze: whomsoever of men he has once seized he holds fast: and he is hateful even to the deathless gods. Thanatos was thus regarded as merciless and indiscriminate, hated by-and hateful towards, mortals and gods alike. But in myths which feature him, Thanatos could occasionally be outwitted, a feat that the sly King Sisyphus of Korinth twice accomplished. When it came time for Sisyphus to die, Zeus ordered Thanatos to chain Sisyphus up in Tartarus. Sisyphus cheated death by tricking Thanatos into his own shackles, thereby prohibiting the demise of any mortal while Thanatos was so enchained. Eventually Ares, the bloodthirsty god of war, grew frustrated with the battles he incited since neither side suffered any casualties. He released Thanatos and handed his captor over to the god. Sisyphus would evade Death a second time by convincing Persephone to allow him to return to his wife stating that she never gave him a proper funeral. This time, Sisyphus was forcefully dragged back to the Underworld by Hermes when Sisyphus refused to accept his death. Sisyphus was sentenced to an eternity of frustration in Tartarus where he rolled a boulder up a hill and it would roll back down when he got close to the top. A fragment of Alcaeus, a Greek lyric poet of the 6th century BC, refers to this episode: King Sisyphos, son of Aiolos, wisest of men, supposed that he was master of Thanatos; but despite his cunning he crossed eddying Akheron twice at fate's command. Sisyphus, son of Aiolos was a more than mortal figure: for mortals Thanatos usually presents an inexorable fate, but he was only once successfully overpowered, by the mythical hero Heracles. Thanatos was consigned to take the soul of Alkestis, who had offered her life in exchange for the continued life of her husband, King Admetos of Pherai. Heracles was an honored guest in the House of Admetos at the time, and he offered to repay the king's hospitality by contending with Death itself for Alkestis' life. When Thanatos ascended from Hades to claim Alkestis, Heracles sprung upon the god and overpowered him, winning the right to have Alkestis revived. Thanatos fled, cheated of his quarry. Euripides, in Alcestis: Thanatos: Much talk. Talking will win you nothing. All the same, the woman goes with me to Hades' house.