The mythographer Pherecydes says that Perseus brought the Cyclopes with him from Seriphos to Argos, presumably to build the walls of Mycenae. Proetus, the mythical king of ancient Argos, was said to have brought a group of seven Cyclopes from Lycia to build the walls of Tiryns.The late fifth and early fourth-century BC comic poet Nicophon wrote a play called either Cheirogastores or Encheirogastores (Hands-to-Mouth), which is thought to have been about these Cyclopean wall-builders. Ancient lexicographers explained the title as meaning "those who feed themselves by manual labour", and, according to Eustathius of Thessalonica, the word was used to describe the Cyclopean wall-builders, while "hands-to-mouth" was one of the three kinds of Cyclopes distinguished by scholia to Aelius Aristides. Similarly,  possibly deriving from Nicophons comedy, the first-century Greek geographer Strabo says these Cyclopes were called "Bellyhands" (gasterocheiras) because they earned their food by working with their hands.The first-century natural philosopher Pliny the Elder, in his Natural History, reported a tradition, attributed to Aristotle, that the Cyclopes were the inventors of masonry towers. In the same work Pliny also mentions the Cyclopes, as being among those credited with being the first to work with iron, as well as bronze. In addition to walls, other monuments were attributed to the Cyclopes. For example, Pausanias says that at Argos there was "a head of Medusa made of stone, which is said to be another of the works of the Cyclopes". Principal sources
Hesiod
According to the Theogony of Hesiod, Uranus (Sky) mated with Gaia (Earth) and produced eighteen children.
According to Homer, the Cyclopes have no ships, nor ship-wrights, nor other craftsman, and know nothing of agriculture. They have no regard for Zeus or the other gods, for the Cyclopes hold themselves to be "better far than they".Homer says that "godlike" Polyphemus, the son of Poseidon and the nymph Thoosa, the daughter of Phorcys, is the "greatest among all the Cyclopes". Homer describes Polyphemus as a shepherd who:

mingled not with others, but lived apart, with his heart set on lawlessness. For he was fashioned a wondrous monster, and was not like a man that lives by bread, but like a wooded peak of lofty mountains, which stands out to view alone, apart from the rest, ... [and as] a savage man that knew naught of justice or of law. Although Homer does not say explicitly that Polyphemus is one-eyed, for the account of his blinding to make sense he must be. If Homer meant for the other Cyclopes to be assumed (as they usually are) to be like Polyphemus, then they too will be one-eyed sons of Poseidon; however Homer says nothing explicit about either the parentage or appearance of the other Cyclopes. Euripides
The Hesiodic Cyclopes: makers of Zeus thunderbolts, the Homeric Cyclopes: brothers of Polyphemus, and the Cyclopean wall-builders, all figure in the plays of the fifth-century BC playwright Euripides. In his  play Alcestis, where we are told that the Cyclopes who forged Zeus thunderbolts, were killed by Apollo. The prologue of that play has Apollo explain:

House of Admetus!