Gaia

Do you mean:
 * Gaia, the spirit of the Earth revered by the Garou and other Fera in the old World of Darkness?
 * Gaia, the Primordial of Creation, who sided with the gods in Exalted?

You may also be looking for:
 * The Children of Gaia, a tribe of werewolves in Werewolf: The Apocalypse.
 * The Heart of Gaia, a ten-part story which served as a prequel to the cancelled computer game Werewolf: The Apocalypse - The Heart of Gaia.