Who were the Titans?
The Titans were the children of Gaea and Uranus. There were twelve. Cronus, the most powerful one, and Rhea, his wife, gave birth to Zeus and his brothers and sisters. Later, Zeus waged war against the Titans and banished them to the Underworld.
A List of the 12 Titans
Hyperion
Hyperion was the sun Titan. He was the father of Helios (the sun, although there is confusion, who is the sun? Hyperion, or Helios?), Selene (the moon), and Eos (the dawn). His wife was another Titan named Theia.
Theia
Theia was the Titaness of sight and the shining light of the blue sky. She was the wife of Hyperion, and her children are Helios, Selene, and Eos.
Cronus
Cronus was the leader of the Titans. He was married to Rhea, and his children were Hades, Zeus, Poseidon, Demeter, Hera, and Hestia. He was the Titan of time and was overthrown by Zeus.
Rhea
Rhea was Cronus's wife. She gave birth to Zeus, Poseidon, Demeter, Hera, Hades, and Hestia. She was the one who saved Zeus and helped him be able to overthrow his father Cronus, who had swallowed the rest of her children. She was the Titaness of motherhood and comfort.
Tethys
Tethys was the wife of Oceanus. She was a nurse and the sea Titaness. She gave birth to 3,000 sons and 3,000 daughters. The sons were the spirits of the rivers and the daughters were the spirits of springs and streams.
Phoebe
Phoebe was a Titan who was associated with the moon. Her husband was Coeus, her brother. Her children were Leto and Asteria.
Coeus
Coeus was the Titan of intelligence and also the keeper of wisdom. His wife was Pheobe, and his daughters were Leto and Asteria.
Crius
Crius was the Titan of constellations and the measure of the year. His wife was Eurybia, and his sons were Perses, Pallas, and Astraios.
Themis
Themis was the Titaness of law and order. One of her children is Prometheus, who sided with Zeus during the war with the gods because he knew they would win.
Mnemosyne
Mnemosyne was the Titaness of memory. Her daughters were the muses, who became the goddesses of arts and science in Greece.
Oceanus
Oceanus was the Titan of the ocean, and the water that encircled Gaea. He was married to Tethys and had 3,000 sons and 3,000 daughters.
Iapetus
Iapetus was the Titan of mortality and was often called "The Piercer." He was the father of Prometheus and Atlas, who are listed below. His wife was the daughter of Oceanus and Tethys, probably Asia. He didn't support Zeus in the war.
Others
Prometheus
Prometheus was the Titan of forethought. Atlas was one of his brothers, and his wife was Pronoea. He sided with Zeus during the war with the gods because he knew they would win.
Atlas
Atlas was the titan of astronomy. He sided with Cronus when the Gods waged war against the Titans, and as a punishment, he had to support the heavens on his shoulders. He tried to trick Heracles into taking it for him, but Heracles was trickier and got out of that situation. Atlas was the son of Iapetus and Clymene, and his wife was the nymph Pleione.