well, learn something new then

It's actually their mysterious nature is a big part of the reason I like them so much. They're basically the mages of the series, though I like them because they don't entirely look the part. But they are very magical beings in nature, and by The Crystal Bearers (far in the future as far as the series is concerned) they basically completely lose their corporeal form and are entirely magical beings. In the early games, they have bodies and have a feathery, bird-like appearance (except their heads which you never see). In TCB, they don't really have a body at all and their armor essentially is their body.