According to Hesiod in Greek Mythology, she is the earth goddess born from Chaos and also the earth mother. She is the mother of all gods and titans.

It is born after Chaos, and after the birth of Eros, it gives birth to Ouranos (sky) and Pontos (sea) without the help of any other element. Then she united with Ouranos and gave birth to Okeanus, Koeus, Kreius, Hyperion, Iapetus, Theia, Rheia, Themis, Mnemosyne, Phoebe, Thetys, Kronos, Cyclops, Brontes, Steropes, Arges, Kottus, Briareus, and Gyges, all of whom are gods.

Gaia uses Kronos to take revenge on Ouranos, who did not bring her children to light. Kronos cuts off his father's balls with a sickle, and gives birth to Erinyes, Gigants, and tree nymphs from the blood spilled on the ground. With the help of Kronos, the goddess who defeated Uranos freed her children. But later, Kronos was thrown into Tartaros by his own son Zeus and shared the same fate.

Erikhthonius from Gaia's relationship with Hephaestus, Keto, Krius, Eurybia, Nereus, Phorkys and Thaumas from Okeanus, Ogyges, Kharybdis, and Antaeus from Poseidon, as well as Kekrops, Kranaus, Eckho, Palaekhthon, Rumor, Arion, and the Golden Fleece. gives birth to the guarding serpent.

The Roman mythology equivalent of Gaia, a mother goddess whose importance decreased over time despite being worshiped all over Greece, is Terra or Tellus.