Aristocrat

Aristocrats or Nobles (貴族階級, kizoku kaikyuu) are a high-ranking vampires classed as Level B (Bクラス, B Kurasu, lit. "B Class").

They are elite vampires with specialized abilities beyond that of normal vampires. Aristocrats are very powerful vampires, but not as powerful as the Purebloods. They have a small amount of human blood in their ancestry as well as all other levels below them. When an aristocrat is killed, they turn to dust, as do all the other levels below them. These aristocratic vampires are still able to be compelled by Purebloods, but enjoy a much more independent lifestyle in general. The Council of Elders is usually made up of Aristocrats.

List of Aristocrat Vampires

 * Takuma Ichijo
 * Hanabusa Aido
 * Akatsuki Kain
 * Ruka Souen
 * Senri Shiki
 * Rima Toya
 * Maria Kurenai
 * Asato Ichijo
 * Shiki (Mother)
 * Ren Kiryu

Trivia

 * Unlike Purebloods, who are revered to the point other vampires would kill anyone who would "sully" their bloodline, Aristicracts face no prejudice if they choose to marry humans.
 * It remains unclear if the offspring of an Aristocrat is considered to drop to Level C if they reproduce with humans for a few generations.
 * On the other hand, it's likely an Aristocract's descendants can become more powerful if they reproduce with Purebloods for a few generations. While never able to truly pure the human ancestry from their lineage, an Aristocract born this way could be considered a Level B+.
 * Its shown that if an aristocrat has a child with a human, the child's vampire genetics are largely unaffected as Seiya Aido, whose mother was human, is still youthful as his father 40 years later.
 * Aristocrats are noted to die when they lose the will to live.
 * Its likely the lifespan of aristocrats is determined by how pure their vampire blood is. In Vampire Knight Memories, none of the former Night Class vampires are seen 1000 years later. Ren Kiryu likely has a longer lifespan than normal aristocrats due to her mother being a Pureblood.
 * However, chapter 26 of Memories reveals that Takuma is still alive and ruining a bookstore. He appears aged, likely having taken the cure to become human briefly.