The DAOist Goddess of Immortality, and Queen Mother of Paradise West.
XI-WANGMU started off at the bottom. She was a plague-carrying tiger spirit at the time of the Han Dynasty and caused much trouble.
But after offering the Emperor a bowl of magic peaches, her career really took off. Daoism came along and elevated her to Top Goddess. She married MU-GONG, otherwise known as Mr YANG, and became Mrs YIN, the personification of Femininity.
Taking up residence in paradise, she began to be associated with immortality, and has even been mistaken for the JADE-EMPEROR’s wife or daughter. (The legends vary, but she also seems to have been the Goddess who gave the Elixir of Life to YI and CHANG-E.)
XI-WANGMU now grows magic peach trees in her Heavenly Peach Garden. The most common of these take a thousand years to blossom — but the Golden Peaches of Immortality only ripen once in nine thousand years.
Eating one of XI-WANGMU’s peaches bestows immediate long life and a host of other benefits. The Gods like them so much that Peach Banquets are a regular occurrence in Heaven.
The last Peach Banquet was canceled after MONKEY ate all the peaches, but bookings are currently being taken for the next one in 5078 A.D.