The 56th demon in Solomon’s grimoire. A demon with the status of a duke, also known as the goddess of the moon. Summoned by Gebel, this demon oversees one portion of the castle. She is capable of creating portals into different dimensions; once there, she can harness the power of the moon and use it to attack her enemies, firing endless crescent moon knives at her opponents. She also has a devastating gravity attack that's generated by power of the lacquer-black moon.
Gremori (also known as Gemory, Gomory, Gemon, or Gaeneron) has her origins in the medieval grimoires. The name is possibily derived from Gimon, one of the angels of "the ninth month, which is called Kislev", from the Liber Juratus Honorii or The Sworne Booke of Honorius (13th century or earlier). In the Lesser Key of Solomon, where she is refered to as male, she is described as a beautiful woman with a duchess' coronet tied about her middle and said to be riding on a great camel. This description appears to be tied to the images of celestial bodies, to which the summoning of spirits were linked, although how exactly is unclear. The rest of the description reads as follows: "His Office is to tell of all Things Past, Present, and to Come; and of Treasures Hid, and what they lie in; and to procure the Love of Women both Young and Old. He governeth 26 Legions of Spirits (...)."