Before Zeus wed Hera, he was initially married to Metis, the Titaness embodying wisdom, prudence, and deep thought. Metis, daughter of Oceanus and Tethys, played a crucial role in Greek mythology as the first wife of Zeus and was instrumental in aiding him during the Titanomachy by providing a potion that forced Cronus to regurgitate his swallowed siblings.

A prophecy foretold that Metis would bear two children: the first would be Athena, a daughter destined for greatness, while the second, a son, would possess such power that he would ultimately overthrow Zeus. This prediction instilled fear in Zeus, who was wary of repeating the fate of his father, Cronus. To prevent this potential threat, Zeus resorted to a drastic measure—he deceived Metis into transforming into a fly and swallowed her whole.

In Simanity, she was the first born child of Tethys and Okeanos.  She married Zeus with whom she had a daughter, Athena. Hera, one of Zeus' many wives, was so jealous of her she ended her, although indirectly as she dies of a heart attack while giving birth to Poros and after learning of Athena's disappearance.