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
The Lake of Souls a means of protecting Harkat's soul when he and Kurda lived in the present at the same time, no such mechanism is in place now, and Harkat will soon disappear, albeit with a guaranteed escape from the Lake of Souls. Kurda eventually decides to sacrifice himself to allow Harkat to carry on his life, with Harkat choosing to risk a possible return to the Lake so he can carry on helping Darren in his quest. As Kurda prepares for his second death, Darren and Harkat return to their world, arriving at the Cirque du Freak. Harkat discovers the panther teeth