classical mythology Classical mythology, also known as Greco-Roman mythology or Greek and Roman mythology, is the collective body and study of myths from the ancient Greeks and ancient Romans. Mythology, along with philosophy and political thought, is one of the m ...

, the Cap of Invisibility (Ἅϊδος κυνέη ''(H)aïdos kyneē'' in Greek, lit. dog-skin of Hades) is a helmet or cap that can turn the wearer invisible, also known as the Cap of Hades or Helm of Hades. Wearers of the cap in Greek myths include

Athena Athena or Athene, often given the epithet Pallas, is an ancient Greek religion, ancient Greek goddess associated with wisdom, warfare, and handicraft who was later syncretism, syncretized with the Roman goddess Minerva. Athena was regarde ...

, the goddess of wisdom, the messenger god Hermes, and the hero Perseus. Those wearing the Cap become invisible to other supernatural entities, akin to a cloud of mist sometimes used to remain undetectable.

Origins

One ancient source that attributes a special helmet to the ruler of the underworld is the '' Bibliotheca'' (2nd/1st century BC), in which the Uranian

Cyclopes In Greek mythology and later Roman mythology, the Cyclopes ( ; , ''Kýklōpes'', "Circle-eyes" or "Round-eyes"; singular Cyclops ; , ''Kýklōps'') are giant one-eyed creatures. Three groups of Cyclopes can be distinguished. In Hesiod's ''The ...

give

Zeus Zeus (, ) is the chief deity of the List of Greek deities, Greek pantheon. He is a sky father, sky and thunder god in ancient Greek religion and Greek mythology, mythology, who rules as king of the gods on Mount Olympus. Zeus is the child ...

the lightning bolt, Poseidon the trident, and a helmet ''(kyneê)'' to

Hades Hades (; , , later ), in the ancient Greek religion and Greek mythology, mythology, is the god of the dead and the king of the Greek underworld, underworld, with which his name became synonymous. Hades was the eldest son of Cronus and Rhea ...

(or Pluto) in their war against the

Titans In Greek mythology, the Titans ( ; ) were the pre-Twelve Olympians, Olympian gods. According to the ''Theogony'' of Hesiod, they were the twelve children of the primordial parents Uranus (mythology), Uranus (Sky) and Gaia (Earth). The six male ...

. In

the helmet is regularly said to belong to the god of the underworld. Rabelais calls it the Helmet of Pluto, and

Erasmus Desiderius Erasmus Roterodamus ( ; ; 28 October c. 1466 – 12 July 1536), commonly known in English as Erasmus of Rotterdam or simply Erasmus, was a Dutch Christian humanist, Catholic priest and Catholic theology, theologian, educationalist ...

the Helmet of Orcus. The helmet becomes proverbial for those who conceal their true nature by a cunning device: "the helmet of Pluto, which maketh the politic man go invisible, is secrecy in the counsel, and celerity in the execution."

Users

Hades

As the name implies, Hades owned the helmet. It was forged for him by Elder Cyclopes after he and his brothers Zeus and Poseidon freed them from Tartarus. He then used this helmet to great effect during the

Titanomachy In Greek mythology, the Titanomachy (; ) was a ten-year war fought in ancient Thessaly, consisting of most of the Titans (the older generation of gods, based on Mount Othrys) fighting against the Twelve Olympians, Olympians (the younger generati ...

and was instrumental in routing the Titans.

Athena

, the goddess of

wisdom Wisdom, also known as sapience, is the ability to apply knowledge, experience, and good judgment to navigate life’s complexities. It is often associated with insight, discernment, and ethics in decision-making. Throughout history, wisdom ha ...

, battle, and handicrafts, wore the Cap of Invisibility in one instance during the

Trojan War The Trojan War was a legendary conflict in Greek mythology that took place around the twelfth or thirteenth century BC. The war was waged by the Achaeans (Homer), Achaeans (Ancient Greece, Greeks) against the city of Troy after Paris (mytho ...

. She used it to become invisible to

Ares Ares (; , ''Árēs'' ) is the List of Greek deities, Greek god of war god, war and courage. He is one of the Twelve Olympians, and the son of Zeus and Hera. The Greeks were ambivalent towards him. He embodies the physical valor necessary for ...

when she aided Diomedes, his enemy. Her assistance even enabled Diomedes to injure the god of war with a spear.

Hermes

The messenger god Hermes wore the Cap during his battle with Hippolytus, the giant.

Perseus

In some stories, Perseus received the Cap of Invisibility (along with the Winged Sandals) from Athena when he went to slay the Gorgon Medusa, which helped him escape her sisters. In other myths, however, Perseus obtained these items from the Stygian

nymph A nymph (; ; sometimes spelled nymphe) is a minor female nature deity in ancient Greek folklore. Distinct from other Greek goddesses, nymphs are generally regarded as personifications of nature; they are typically tied to a specific place, land ...

s. The Cap of Invisibility was not used to avoid the Gorgons' petrifying gazes, but rather to escape from the immortal Stheno and Euryale later on after he had decapitated Medusa.

In popular culture

In the '' Percy Jackson & the Olympians'' series by

Rick Riordan Richard Russell Riordan Jr. ( ; born June 5, 1964) is an American author, best known for writing the ''Percy Jackson & the Olympians'' series. Riordan's books have been translated into forty-two languages and sold more than thirty million cop ...

, Annabeth Chase (a daughter of

) received a

New York Yankees The New York Yankees are an American professional baseball team based in the Boroughs of New York City, New York City borough of the Bronx. The Yankees compete in Major League Baseball (MLB) as a member club of the American League (AL) Am ...

baseball cap from her mother that was a disguised cap of invisibility. In the same series, the main antagonist, Luke Castellan, stole Hades' Helm of Darkness, as well as Zeus' master bolt. Hades has also used it in '' The Blood of Olympus'', where he goes banishing Gaea and Tartarus's children, the giants, to Tartarus. The helmet also appears in the Italian mythological comedy '' Arrivano i titani'', but its invisibility powers work in this version only at night. The helm plays a major role in Dan Simmons' novel '' Ilium'' in which the scholiastic narrator Thomas Hockenberry acquires the artifact through

Aphrodite Aphrodite (, ) is an Greek mythology, ancient Greek goddess associated with love, lust, beauty, pleasure, passion, procreation, and as her syncretism, syncretised Roman counterpart , desire, Sexual intercourse, sex, fertility, prosperity, and ...

in her scheme to have the scholiast spy on and eventually assassinate the goddess

References

{{Greek religion, state=collapsed Ancient helmets Athena Caps Deeds of Hermes Fiction about invisibility Magic items Mythological clothing Objects in Greek mythology Perseus Symbols of Hades