The cyclopses are giants that have only one eye, which is located in the center of their forehead. In Greek mythology there are two types of cyclopses: those born from the earth and the heavens, and those born from other gods.
The three cyclopses born from the union of the earth and the sky were friends of the gods. They stood with them against the titans in the titanomachy. It was also because of this friendship that the cyclopses made great things for the gods,including Zeus' thunderbolts, Poseidon's trident, and Hades' helm of invisibility. Their names were Arges ("brightness"), Brontes ("thunderer"), and Steropes ("lightning-maker"). They were also a part of the Roman mythos, and they served the god Vulcan at Mt. Etna.
The other type of cyclopses were savage, lawless, and often cruel. They prefered to live in the wilderness, but would harass men in search of supplies. This variety of cyclops was not known for their brains. One cyclops named Polyphemus, was the son of Poseidon. He captured the hero Odysseus in a cave and was blinded by him in order for the hero to excape from Polyphemus' cave.
The cyclopses are portrayed as giant men with one eye. Being a generally savage race they did not wear much clothing, usualy only a loincloth and sandals.