Night Wind has blue eyes, red lips, extremely long eye lashes and appears to be clothed in black. Instead of flowing garments and hair, if she has any hair it is conceled, and she appears to wear tight black garments with flowing black strands. I can't figure out if she is wearing a dress or pants (pants that are kinda bell bottomish). If any one knows for sure, or you think you can tell, send me a line by email and tell me what you think.
Night Wind is the living essence and spirit of the night winds which she controls. Not much is known about Night Wind, although many fans like her a lot, even though she had a very small part in Fantastic Adventures of Unico. When West Wind fails to do her duty to put Unico on the Hill of Oblivion, Night Wind is sent by the Gods to finish the job. Also it seems that she wants to do this job and enjoys it, seeing that she chases after West Wind when the only thing she was told to do for sure was take care of Unico.
Night Wind is a scary spirit that even scares the Gods. If the Gods aren't scared of her, they're at least creeped out by her.
I guess you could say that every series contains an evil twin. Night Wind is not West Wind's twin of course, but I'm sure that's basically that's what she's suppose to be. There has been a lot of fan speculation that she is related to West Wind, probably her cousin. If that's the case, if these are the winds from Greek Mythology, then West Wind's mother is Aurora the Dawn, and Aurora has two siblings. One is Helios the Sun, but Night Wind can not stand sunlight, and the other is Selene the Moon. So, if this all holds to Greek Mythology, then Night Wind could be one of the 50 daughters that Selene had with her lover/husband Endymion.