Cap of Invisibility - wikipedia Cap of Invisibility Cellini 's Perseus ( 1545 -- 54 ), wearing the Cap of Invisibility and carrying the head of Medusa In classical mythology, the Cap of Invisibility ( Ἅϊδος κυνέην ( H ) aïdos kuneēn in Greek, lit. dog - skin of Hades ) is a helmet or cap that can turn the wearer invisible. It is also known as the Cap of Hades, Helm of Hades, or Helm of Darkness. Wearers of the cap in Greek myths include Athena, the goddess of wisdom, the messenger god Hermes, and the hero Perseus. The Cap of Invisibility enables the user to become invisible to other supernatural entities, functioning much like the cloud of mist that the gods surround themselves in to become undetectable. Contents 1 Origins 2 Users 2.1 Hades 2.2 Athena 2.3 Hermes 2.4 Perseus 3 In popular culture 4 See also 5 References 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 Cyclops give Zeus the lightning bolt, Poseidon the trident, and a helmet ( kyneê ) to Hades in their war against the Titans. In classical mythology the helmet is regularly said to belong to the god of the underworld. Rabelais calls it the Helmet of Pluto, and Erasmus 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 Cyclopses after he and his brothers Zeus and Poseidon freed them from Tartarus. He then used this helmet to great effect during the Titanomachy and was instrumental in routing the Titans. Athena Athena, the goddess of wisdom, battle, and handicrafts, wore the Cap of Invisibility in one instance during the Trojan War. She used it to become invisible to Ares 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 nymphs. The Cap of Invisibility was not used to avoid the Gorgons ' petrifying gazes, but rather to escape from the immortal Sthenno and Euryale later on after he had decapitated Medusa. In popular culture In the Dragon Quest role - playing video game series, there is a piece of equipment named `` Hades ' helm. '' It is cursed, and is therefore useless, in every game but Dragon Quest IX, in which it can be alchemised into a Great Helm. In the Percy Jackson & the Olympians series by Rick Riordan, Annabeth Chase ( a daughter of Athena ) received a New York Yankees 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. 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 scholic narrator Thomas Hockenberry acquires the artifact through Aphrodite in her scheme to have the scholic spy on and eventually assassinate the goddess Athena. See also Bident -- another mystical object associated with Hades Cloak of invisibility Cloaking device Mambrino -- a fictional Moorish king who possessed a golden helmet that would make the wearer invulnerable Tarnhelm References Jump up ^ Hansen, William ( 2004 - 06 - 10 ). Handbook of Classical Mythology. World Mythology. Santa Barbara : ABC - CLIO. ISBN 978 - 1 - 57607 - 226 - 4. Jump up ^ Michael W. Stewart ( 2006 - 08 - 15 ). `` Helm of Hades ( Cap of Hades ) ''. Greek Mythology : From The Iliad To The Fall Of The Last Tyrant. Retrieved 2007 - 05 - 05. Jump up ^ G.S. Kirk ( 1990 ). The Iliad : A Commentary, Books 5 - 8. Cambridge University Press. pp. 147 -- 148. ISBN 978 - 0 - 521 - 28172 - 0. Jump up ^ Gargantua and Pantagruel Book 5, Chapter 8. Jump up ^ Erasmus, Adagia 2.10. 74 ( Orci galea ). Jump up ^ Francis Bacon Essays Civil and Moral 21, `` Of Delays ''. Jump up ^ ``... but Athene put on the cap of Hades, to the end that mighty Ares should not see her. '' Homer. Iliad 5.844 - 845. Translation By A.T. Murray. Jump up ^ `` Encyclopedia of Greek Mythology - Hippolytus ''. Retrieved 8 December 2015. Jump up ^ Coulter, Charles Russell ; Turner, Patricia. Encyclopedia of Ancient Deities. p. 219. ISBN 9780786403172. Retrieved 8 December 2015. Jump up ^ Joel Skidmore ( 2006 - 06 - 10 ). `` Hermes ''. Mythweb. Retrieved 2007 - 05 - 05. Jump up ^ Morford, Mark P.O. ; Robert J. Lenardon ( 2006 - 07 - 18 ). `` Perseus and the Legends of Argos ''. Classical Mythology ( Eighth ed. ). USA : Oxford University Press. pp. 506 -- 518. ISBN 978 - 0 - 19 - 530805 - 1. Jump up ^ Phinney Jr., Edward ( 1971 ). `` Perseus ' Battle with the Gorgons ''. Transactions and Proceedings of the American Philological Association. The Johns Hopkins University Press. 102 : 445 -- 463. doi : 10.2307 / 2935950. JSTOR 2935950. 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Question: what was given to perseus to make him invisible
Answer: the Cap of Invisibility