Arcueid is the princess of a vampiric race of creatures called the True Ancestors. True ancestors are incarnated Nature Spirits, being classified as Elementals, said to be the original bloodsucking species independently established by the planet as its sense of touch. They are vampiric creatures from birth, however, unlike mot vampires, the root of their bloodlust is psychological rather than physical. Because they are part of nature, they can use a power to alter and reconstruct the world around them according to their thoughts. They can be classified as a type of greater Fairy & they are said to be Planet-class Spirits, a rank higher than Divine Spirits. As they receive backup from the planet, it can be said that the limits of their actions are the limits of nature itself.

Arcueid is 5'5, weighs 52KG & her 3 sizes are B88/W55/H85. Her hair is blonde & short , & goes down to her neck, & she has bright red eyes. She has the appearance of a beautiful teenage girl around 16-17. Her real age is about 800-900, she spent those centuries sleeping.

Arcueid wears 3 different outfits:

Outfit 1: A white turtleneck, a long purple skirt, dark leggings & black flat-shoes.

Outfit 2: A white turtleneck with a dark-blue pleated skirt, black legging & brown knee-high boots.

Outfit 3: A short white double-breasted trench-coat with a white puffy shawl with a large black ribbon, a white turtleneck & black thigh-high boots.

Not the best person to have as an ally, but the absolute worst to have as an enemy. Arcueid is a killer who never experienced anything other than fighting & doesn't care for useless matters.
Despite this, Arcueid is shown to be whimsical, happy-go-lucky, cheerful & active while still keeping her vast knowledge & dry humor. Although knowing the basics of the modern era, does not seem to know about social norms. She has no desire to threaten human society, instead hunting other vampires known as Dead Apostles.