The Aeon God of Rephaites, Fiction Vixen Yuemia appears as a mechanical lady with no hands, instead she has a large pair of wings on her head that can function as hands. Yuemia's position was usurped by Dreamweaver, causing imbalance in Rephaites. In battle, she uses her wings to attack and can project her weapon, a glaive named Shihouken (四宝剣 Four Treasures Sword).

Yuemia was the oldest god; her reference already existed in the distant past, when people gave her the name Kizou Seibou (創造 聖母 va:Vate pronunciationKizou Seibou; yh:Yaohu pronunciationChuangzhao Shengmu), which means "Genesis Holy Mother". Since Vate are modeled after her, she can be considered the mother of the three original Vates: Maayaa, Vierge, and Alice.

Yuemia's journey represents her life assessment and philosophy. She stands outside herself and objectively observes her life in order to decide whatever it is what she want to be.

Yuemia's name was taken from Hindi term "Yoni", an aspect of Parvati, and translated to ancient Rephaites language. Her design was inspired from Crescens of Xenogears.