Briareus instance of Hecatoncheires
In Greek mythology, the Hecatoncheires (Greek: Ἑκατόγχειρες, lit. "Hundred-Handed Ones"), or Hundred-Handers, also called the Centimanes (; Latin: Centimani), named Cottus, Briareus (or Aegaeon) and Gyges (or Gyes), were three monstrous giants, of enormous size and strength, each with fifty heads and one hundred arms.  In the standard tradition they were the offspring of Uranus (Sky) and of Gaia (Earth), and helped Zeus and the  Olympians to overthrow the Titans in the Titanomachy.Names
The three Hundred-Handers were named Cottus, Briareus and Gyges. Cottus (Κόττος) is a common Thracian name, and is perhaps related to the name of the Thracian goddess Kotys. The name Briareus (Βριάρεως) was probably formed from the Greek βριαρός meaning "strong". Hesiod's Theogony also calls him "Obriareus". The name Gyges is possibly related to the mythical Attic king Ogyges (Ὠγύγης). "Gyes", rather than Gyges, is found in some texts.Homer's Iliad gives Briareus a second name, saying that Briareus is the name the gods call him, while Aegaeon (Αἰγαίων) is the name that men call him. The root αἰγ- is found in words associated with the sea: αἰγιαλός "shore", αἰγες and αἰγάδες "waves". The name suggests a connection with the Aegean Sea. Poseidon was sometimes called Aegaeon or Aegaeus (Αἰγαῖος). Aegaeon could be a patronymic, i.e. "son of Aegaeus",  or it could instead mean "the man from Aegae".The name Hecatoncheires derives from the Greek ἑκατόν (hekaton, "hundred") and χείρ (cheir, "hand” or "arm"). Although the Theogony describes the three brothers as having one hundred hands (ἑκατὸν μὲν χεῖρες),  the collective name Hecatoncheires (Ἑκατόγχειρες), i.e. the Hundred-Handers, is never used. The Theogony once refers to the brothers collectively as "the gods whom Zeus brought up from the dark", otherwise it simply uses their individual names: Cottus, Briareus (or Obriareus) and Gyges.The Iliad does not use the name Hecatoncheires either, although it does use the adjective hekatoncheiros (ἑκατόγχειρος), i.e. "hundred-handed", to describe Briareus. It is possible that Acusilaus used the name, but the first certain usage is found in the works of the mythographers such as Apollodorus.
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