Greek Mythology Series - The Beginning (The Elder Titans)

It all began with Chaos who is basically nothing. Gaea (the Earth) sprang form this nothingness along with Erebus, Tartarus, Eros, and Nyx. Erebus is the personification of deep darkness and shadows while Tartarus is the Underworld. Eros is love and Nyx is night. Nyx and Erebus got together and had Hemera (the day), Hypnos (sleep), the Moirai (the Fates), Geras (old age), Thanatos (death), Nemesis (retribution), Eris (strife), Charon (the boatman who brought the souls of the dead to the gates of the Underworld), and Aether (the air the gods breathed).

It is said that either Gaea created Uranus, the sky/heavens, herself or Aether fathered him.

Gaea and Uranus got together and had 12 children who are the Elder Titans. These Titans are:

Males-

Coeus, Titan of intelligence & far sight 

Cronus, Titan of time

Crius, Titan of stars

Hyperion, Titan of light

Iapetus, Titan of mortal life span 

Oceanus, Titan of all the salt water on earth 

Females-

Mnemosyne, Titan of memory

Phoebe, Titan of bright intelligence

Rhea, Titan of fertility & motherhood

Theia, Titan of shinning

Themis, Titan of divine law & order

Tethys, Titan of all fresh water on earth

Uranus and Gaea also birthed three Cyclopes (plural of Cyclops) and three Hecatoncheires. Uranus hated these creatures so he banished all of them to Tartarus.

Cyclopes are enormous one-eyed monsters birthed by Uranus and Gaea. However, according to Homer, their father is actually Poseidon.

The Hecatoncheires were giant creatures with a hundred hands capable of unfathomable strength and fifty heads.

Gaea was infuriated by Uranus' treatment of the Hecatoncheires, so she began plotting to overthrow him.