Sailor Pluto require the use of the Garnet Rod, which is shaped like a giant key as a symbol of her stewardship over the Door of Space-Time. In Roman mythology, it is stated that the god Pluto holds a key because "they say that what is called Hades has been locked up by Pluto, and that nobody will return back again therefrom." Natale Conti cites Pausanias in noting that keys are an attribute of Pluto as the scepter is of Jove (Roman Zeus) and the trident of Neptune (Poseidon). The Pluto Crystal is perhaps her most important possession, as it is her
Pluto (mythology) called, as is known, Lethe, Cocytus, Phlegethon and Acheron, tributaries of the Stygian swamp." This work derives from that of the Third Vatican Mythographer, possibly one Albricus or Alberic, who presents often extensive allegories and devotes his longest chapter, including an excursus on the nature of the soul, to Pluto. In Dante's "Divine Comedy" (written 1308–1321), Pluto presides over the fourth circle of Hell, to which the greedy are condemned. The Italian form of the name is "Pluto", taken by some commentators to refer specifically to Plutus as the god of wealth who would preside over the torment of those