Nirrnir Nachtoy

Age: 300+ years

An NPC and the heir to House Nachtoy, one of the two families that head the 7th Floor's Voluptia Grand Casino. Despite her high status she is quite casual and laid back, constantly bemused by Kirito's antics, yet possesses a maturity beyond her years.

Nirrnir is a Dominus Nocte, or a Lord of the Night; in other words, Aincrad's interpretation of a vampire. She has persisted for over 300 years, watching over the Nachtoy clan and the Grand Casino all the while. Rather than drink human blood, she chooses to drink diluted dragon's blood to sate herself.