also before everyone goes, EWWW furry, you ned to know 2 things,
the furry fanbase in japan is ALOT DIFFERENT from the furry fanbase on this side and for those who have access to the book material, should know about the non-monsterization transformations, so this was due.
I wonder why something like this appear in the monstergirl profiles because the intro say clear that all monsters are come close to woman because of the succubus queen. This monster only looks like a normal cat who can walk on two feets.
Well, the Wiki link Mastine provided leads me to think it's some kind of witch. Although it it could be a type of fairy(though the royal look it throwing me a bit, the again maybe each fairy/fey race has its own royalty). It could also be the queen of the Caith Sith and grants them(women who become Caith Sith witches) the power to transform if they make a pact with her. Will just have to wait for the english version.