The Mask
Sunny Bauer's five foot seven, a fact that is easier to observe on those rare occasions she's standing still. If weren't for the hair, she wouldn't be much to look at, but the hair grabs attention even when it's poking out from under her uniform cap. None of the colors are in themselves unnatural—a honey blonde, a brown with a kiss of auburn, an actual proper black—but they don't go together the way they do on Sunny's head, as if some kind of jungle cat or hyena had grown human hair. The rest of her is more wiry than lean, more angles than curves. Her weight's always a little more on the balls of her feet than people expect, and she's not particularly good at sticking to a spot.

The Mien
The unruly hair mortal hair becomes an equally unruly mane to eyes that can see it, with tufts of the same particolored fur along her forearms and down the back of Sonya's neck. Her skin, even where there's none of the fur, sports the same mix of colors, but they refuse to stay put. Sonya's eyes are a little too large for her face and their pupils are slitted like a cat's. It's clearer, behind the mask, that she's unusually long-waisted, with a flexibility in her spine that helps her take advantage of her low center of gravity. Her teeth and nails are pointed.