Shadow Galactica been played by two actresses, Haruko Yamaguchi and Megumi Wakamatsu. and appear only in Act 48 of the manga. Sailor Lethe is named for a naiad in Greek mythology, and for a river of the Greek underworld where dead souls go to forget their past lives before being reincarnated. Sailor Mnemosyne is named for the Titaness of memory, the mother of the muses, as well as another river in the underworld which brought remembrance and omniscience. Sailor Lethe has an attack called "Galactica Myosotis Alpestris", which she used to attack Usagi. Myosotis alpestris is the name of an alpine species
Children of Blood and Bone making it easy for bothering African and Western readers to understand they help souls pass on. They can understand the soul's needs and emotions. Having an intimate connection with the dead, they can bend souls to their will. Reapers can command animations made from earth and the souls of the dead or just souls in the form of shadows. Their powers feed on their rage, but there is also a peaceful use for their magic. Zélie demonstrates the empathy Reapers have for passing souls. They feel what they need and can feel if they are too "weighed down by sin