Arcueid Brunestud

Arcueid is a beautiful woman with short blonde hair down to her neck, and red eyes. Her traditional outfit consists of a long sleeve white shirt, long purple skirt, and black boots. She has wide hips, an extremely plump and soft rear, as well as thick, squishy thighs that match her buttocks. Her farts are very loud and wet,always feeling bloated and full of gas. As such, she has little control in when she'll let one rip. The farts tend to escape her without her being able to do much about it. Her farts are very loud and bubbly.

Arcueid is shown to be a whimsical individual who, although knowing the basics of the modern era, does not seem to know about social norms.

Arcueid does everything in her power not to drink Shiki's blood, which nearly occurs several times in game as he is practically the only human at night with her, and she has problems controlling her Vampiric Impulses (吸血衝動, Kyūketsu Shōdō?) after being drastically weakened by Shiki's attack. She doesn't want to drink blood, as she doesn't want to become a monster that feeds on humans in order to survive.

Arcueid seems to thoroughly enjoy when Shiki cooks breakfast for her. In Melty Blood, Shiki threatens to stop doing this for her if she doesn't meet him in the park that night. When Sion questions whether such a threat would ever have any sort of effect on a True Ancestor, Shiki recounts to her a time that he managed to get Arcueid to immediately apologize to Akiha when she and her were arguing by making the same threat. Later that night, Arcueid does, in fact, meet Shiki and Sion in the park. She apparently cannot stand garlic. In a scene in Kagetsu Tohya, Arcueid eats instant noodles cooked by Shiki that had garlic in them, and becomes sick.

She was originally a being without emotions who never spoke. She only focused on her duties and then returned to sleep in an endless cycle. Shiki, by killing her, made her interested in something on her own for the first time and essentially "broke" her. The "airhead" version of her is something that shouldn't exist alongside her purpose as a weapon, but it was present in her foundation. She is not truly an airhead, but more childish and honest.

also receives help from Merem Solomon, who reveres her as a "Princess." He helps her travel around the world without much trouble, booking plane tickets and trading gold for money, but she does not know what to do with his unconditional affection.

When she loses control of her Vampiric Impulses, she is known as Red Arcueid.