Board Thread:Speculation House/@comment-4606441-20141024012020/@comment-10380701-20141026131347

To be fair, Yang's hair is notably different from everyone else's; No one else have that distinctive curly hairstyle. If Vermilion's faunus trait is her hair, then maybe that's Yang's as well.

Of course, as a half-Faunus, Yang doesn't get the perks of being a faunus, like night vision or whatever. It's why she's not aware. For all she knows, her hair is just plain weird when it grows.