Twice in Greek myth someone physically overpowers Death, and in both cases the story treats mortality as a mechanism that can jam.
Sisyphus does it first. Condemned for various offences — betraying Zeus' secret to a river god, in the usual account — he is sent Thanatos with chains. Sisyphus asks him to demonstrate how the chains work and locks him in them. With Death bound, nobody on earth can die: the wounded lie in agony, the old cannot go, and the sacrifices to the gods of the dead stop. Ares, in the version reported by later mythographers, is the one who comes and frees him, being the god with the most obvious interest in men being able to die in battle.
Heracles does it second, in Euripides' Alcestis. Alcestis has agreed to die in her husband Admetus' place. Heracles, arriving as a guest and discovering what has happened after some drunken behaviour in a house of mourning, goes to the tomb, waits in ambush for Thanatos to come and drink the offerings, and wrestles him for her. He wins, and brings her back veiled and silent. Euripides opens the play with Thanatos on stage arguing with Apollo about whether he can be talked into leniency, and refusing.
What he actually looks like
Not a skeleton and not a reaper. In Greek art Thanatos is a winged man, often bearded in archaic depictions and beardless and youthful later, and in funerary art he carries an inverted torch — a flame turned down to the ground.
His most famous appearance is on the Euphronios krater, painted around 515 BCE and one of the most celebrated Greek vases in existence, showing Thanatos and Hypnos, Sleep, lifting the body of Sarpedon from the battlefield under Hermes' direction while blood runs from the wounds. The Iliad describes exactly that scene in Book 16: Zeus, having let his son die, sends Apollo to wash the body and give it to the twin brothers Sleep and Death to carry to Lycia for burial. Two gentle powers, doing a service.
That is the tone of him throughout the Greek material. He is not cruel and he is not the enemy; he is the one who comes and takes you, and he does not negotiate.
Where the Grim Reaper came from
Not here. The hooded skeleton with a scythe is a medieval European construction, assembled from the Black Death, from the Dance of Death imagery of the fourteenth and fifteenth centuries, from personifications in Christian art, and from the harvest metaphor for God gathering souls. The scythe is agricultural and the skeleton is a memento mori.
Thanatos' equipment is a torch pointing down, sometimes a butterfly, sometimes a wreath, sometimes a sword in later Roman material. His Roman name is Mors, feminine in Latin, and the gender difference is one reason Roman poetry treats death rather differently from Greek. Nothing in either tradition looks like the modern reaper, and conflating them collapses about fifteen centuries.
The family
He is a son of Nyx, night, born in Hesiod without a father alongside the whole catalogue of things that cannot be argued with: Doom, the Keres, Sleep, the tribe of Dreams, Blame, Distress, Nemesis and the Moirai. Hesiod describes the house where Night and Day pass one another, and says Sleep and Death live there too — Sleep roaming the earth gently, kind to men, and Death having an iron heart and a pitiless bronze spirit, hated even by the gods.
The Keres, his sisters, are worth distinguishing: they are violent deaths, plural, dark-robed, with white teeth and bloody claws, dragging bodies off a battlefield and fighting each other over the dying. Thanatos is death as such; the Keres are the specific ways it happens. A Greek could speak of a man's ker as his individual doom.
Not the ferryman, not the king
Three underworld figures get conflated constantly and are entirely distinct:
- Thanatos takes you at the point of death.
- Charon ferries you across the water, for a fee.
- Hades rules the place you arrive at.
Hades is not death and is never depicted taking anyone; he is a king with an administration. Thanatos has no realm and no subjects. Modern fiction merges all three routinely, which is why the "god of death" of a video game generally bears no relation to any of them.
Freud, and the second life of the name
Freud never used the word Thanatos in his published writing — he wrote of Todestrieb, the death drive — but it was applied to his concept by colleagues, particularly Paul Federn, and it stuck. Paired against Eros as the life drive, the opposition became one of the most widely borrowed frameworks of the twentieth century, used far outside psychoanalysis in literary criticism, film theory and everyday speech.
The words built on him are otherwise clinical: euthanasia (literally a good death, a Greek compound already in use in antiquity for dying well), thanatology, thanatophobia. In fiction he appears rarely under his own name and constantly under borrowed ones; Marvel's Thanos takes the name and almost nothing else. Neil Gaiman's Death in The Sandman, a cheerful young woman who is kind to the people she collects, is closer to the Greek figure than most deliberate adaptations, though it was not drawn from him.
A death who can lose a wrestling match
Was he worshipped anywhere?
Barely. Pausanias mentions an altar shared with other powers at Sparta and a temple of Thanatos there is sometimes reported, and there are scattered references to him in oaths and curses, but there is no significant cult. That is normal for the more abstract children of Night — you do not build a sanctuary to the thing you want least to attract. Sleep, by contrast, had cult associations at healing sanctuaries, where sleeping was the point.
If he can be beaten, is death optional?
The stories are careful that it is not. Sisyphus' trick is undone and he is punished eternally; Alcestis is retrieved only because a substitution had already been accepted, so the books balance. In both cases the intervention is temporary and the exchange rate is preserved. The point of a death-god who can be wrestled is not that death can be escaped but that it is a transaction, and transactions can be argued over.
What is Thanatos' role in the Orphic and mystery traditions?
Marginal. The mystery religions were concerned with what happens after death rather than with the moment of it, so their attention goes to Persephone, Dionysus and the geography of the underworld. The Orphic Hymns include one to Death, addressing him as the one who takes all and is a just judge in his own way, and asking him to come late — which is about as much as anyone ever asked of him.
Why are Sleep and Death twins?
Because the resemblance is obvious and ancient, and Greek thought made the relationship literal. Homer calls sleep the brother of death directly. The pairing gave Western literature one of its most durable metaphors — Hamlet's "to sleep, perchance to dream" runs on it — and it also carries the more disquieting implication that the difference between the two is one of duration rather than kind.