Vouivres, also known as Guivre, are flying serpents, or wyverns, with jewels embedded to their foreheads, which gives them the sense of sight. The vouivre is depicted as greedy, her head crowned with pearls and a golden ring about her tail. Many thieves and heroes have attempted to steal the precise gems, despite the reputation of invulnerability attributed the vouivres. These dragon sub-species usually stayed in a cave for most of their time, only to leave to bathe only for a few minutes.
While originally different from each other, both of their names have become synonymous. For example, in The Drac: French Tales of Dragons and Demons, the vouivre is depicted as a female creature with dazzling, green scales which emanate sound as the vouivre flies. The beast in this story stayed in a cave for most of her time, then left to bathe only for a few minutes.
"A female dragon with bat wings. Sometimes depicted as a beautiful female spirit. They have bat wings, eagle legs, and a snake tail, and are all female. The secret of their power is the garnet gem in their forehead. If it is stolen, they lose their power and must obey the gem's owner."
A Vouivre of Niflheim who resides in the Dark North. She asks Jin to help her find her lost Dragon Gem. After retrieving it from Hvergelmir and bringing it to her, the dragon girl is glad and rewards Jin with a kiss before disappearing.