Moonmaidens will counter physical attacks with slashes of their own. They can inflict Petrify by using Embrace, which should be cured immediately. They are not too difficult to defeat, as a single Bahamut or Leviathan is enough to take them down. Inflicting Confuse on the Moonmaiden with items such as the Faerie Rod will cause her to use only Embrace on herself or other enemies.
The Moonmaiden's SNES and PS name, "Kary", is identical to the name used to refer to the snake-like Marilith in the NES version of the original Final Fantasy.
In the GBA translation, she is called "Selene Guardian." [view·edit·purge]Selene means "moon" in Greek. In Greek mythology, Selene is the goddess of the moon. She is the daughter of the Titans Hyperion and Theia, and sister of the sun-god Helios, and of Eos, goddess of the dawn. Her equivalent in ancient Roman religion and myth is Luna, Latin for "moon".