Sailor Mnemosyne ( )
MANGA: She is the guardian of the River of Memory. Their planets were small, and poor. It was always chaotic, with never-ending fights. Galaxia appeared, and death and silence came to their planets. They felt there was no choice but to follow her. She betrayed Lethe to save Eternal Sailor Moon pulling her out of Oblivion. She gave Sailor Moon and her compainions water from the River of Memory allowing them to regain the memories of their mission. She explained to Lethe that it was better to have Galaxia decide their fate. Both of them were killed by Sailor X & Sailor.
MANGA: She seemed to be more soft than her partner, Lethe. She believing it was not their place decide Sailor Moon's fate and to allow Galaxia to do so.
Menemosyne is the personification of memory and its goddess. She is a daughter of Gaia and Uranus and the mother of the nine Muses by Zeus, her nephew. - Encyclopedia Mythics Area
Born to Die | Desert River Senshi | Undertow