Nox appears to be a humanoid in a black plague doctor's mask.
She has a relaxed, shy personality toward strangers. Around friends she is far more vocal and friendly.
Although she appears to be human there is no visible skin or limbs, only shoulder length, fluffy brown hair from the back of her cap. Clothing doesn't appear to come off for anyone unless Nox wills it or it is physically cut off her body.
Any cut cloth may turn to ashes at a later date.
Feathers have been observed around her assumed living areas.