In Greek mythology, two different groups of people were referred to as the Hyades ("the rainy ones"). Pluvius ("he who sends rain") was also used to describe them.

1. Sisters of Hyas. Their brother was accidentally killed in a hunting accident and the Hyades died from their grief. They were changed into stars, the head of Taurus. Their names are Phaola, Ambrosia, Eudora, Coronis, and Polyxo.
2. Additionally, Thione and Prodice, who were supposed to be daughters of Hyas by Aethra (one of the Oceanides ), have been added to the group of stars.

The Greeks believed that the rising and setting of the Hyades stars were always attended with rain, hence the association of the Hyades (sisters of Hyas) and the Hyades (daughters of ocean) with the constellation of the Hyades (rainy ones) and called also 'huo pluo'/'pluvius' (the rain bringer).