Even so, his skills more so represent a sage with ability to cast both white and blacks spells up to the strongest of them. I think they just decided to rename his sage class as Lunarian so people would realize he's not human. Although I can't imagine why, I figure anyone who says "I'm not a human" while sitting on a chair in a large crystal palace to be most definitly not a human. But that's just me. >.>
And where was this at by the way? I've never heard they had thier own classes in the game. Unless I missed it blatantly in the game (which I seem to have a tendancy to do in most games >.>), I'm assuming it's in an art book or some such extra thing? Hmmm I'm curious now to see what they classify Locke as. >.>Also, in FFVI, Mog's class and race are both Moguri, and Umaro's are both (abominable) Snowman.