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|Physical and Vital Statistics|
|Occupation||Second Wife of Karlheinz|
|Relatives|| Karlheinz (husband)|
|Game||Diabolik Lovers ~Haunted Dark Bridal~ (Shu and Reiji's Routes)|
|Manga||Diabolik Lovers Prequel|
|Anime||Episode 5 (flashback)|
|Japanese Voice||Mana Hirata|
|English Voice||Luci Christian|
Beatrix is described as a woman who resembled Shu in appearance. She wore her hair in a bun but had two long strands in the front with her bangs parted to the left. She wore a red and black gown. The top part consisted of black shoulders with a gold border and long red capped sleeves with a black border and black ruffles at the end of the sleeves. The middle was a fitted bodice with red sides featuring gold borders and embellishment and a black middle section which is part of the neckline. The bottom of the dress was a red skirt with black ruffle borders opened in the front to reveal a dark red petticoat. She also wore a red jewel necklace.
She was similar to Reiji in terms of personality. She was described as a good person who was serious but awkward and although she sincerely cared for both her children, she had difficulty in expressing it to them due to her personality. This, in turn, caused her to unwittingly put her two children against each other.
Karlheinz is Beatrix's husband and father of her children. Although Beatrix's true feelings for Karlheinz weren't explained, she is shown to have some respect for her husband. When Beatrix found a young Reiji studying Socrates and noticed how much Reiji admired his father, she called Karlheinz a "splendid man" along with "a Vampire Amongst Vampires, the King of Vampires, Karlheinz", hinting the fact that Beatrix probably respected Karlheinz as her superior.
Because Cordelia was generally unloved by Karlheinz, and Beatrix gave birth to his two eldest children, Cordelia despised her and viewed her as an impudent eyesore. Using both her status as the first wife as well as the Demon Lord's daughter, Cordelia constantly tormented Beatrix - degrading her and doing her best to prove that her own sons were better than Beatrix's.
Even though Cordelia despised Beatrix, Beatrix didn't feel the same for Cordelia which is why when she was assassinated, she died smiling, being freed from her guilt of neglecting Reiji and putting too much pressure on Shu as well as from Cordelia's torment.
Shu is Beatrix's eldest son and because of that, he's the son she seemed to favor. Shu might have seemed distant towards her because he hates his responsibilities and doesn't appreciate the strict restrictions his mother placed upon him to groom him into his father's heir but it seems that he does love her.
Reiji is Beatrix's second son, whom she, unfortunately, ended up neglecting due to her hostilities with Cordelia.
Reiji admired and loved his mother deeply, viewing her as the “perfect lady ”. As Reiji grows more and sees that his mother is far from perfect, as she acts frustrated towards her rival Cordelia. He begins to lose respect for her, until the moment he decides to kill her hiring a vampire hunter .
As she lay dying, she was pleased to know that Reiji had grown up well knowing that he had orchestrated her death and that was a vampire's mark of adulthood. However, in Reiji's MORE,BLOOD Prequel manga, in a flashback, Beatrix briefly interacts with Reiji when she finds him studying in the library. She praises him by saying it is good to see he is working hard to become his brother's right -hand man. Reiji replies by telling her that she has just disturbed him, thus making their conversation a little awkward. Beatrix apologizes and makes her leave after encouraging Reiji to keep up with his studying.
|Sakamaki Brothers||Ayato Sakamaki • Kanato Sakamaki • Laito Sakamaki • Shu Sakamaki • Reiji Sakamaki • Subaru Sakamaki • Kino|
|Mukami Brothers||Ruki Mukami • Kou Mukami • Yuma Mukami • Azusa Mukami|
|Tsukinami Brothers||Carla Tsukinami • Shin Tsukinami|
|Others||Karlheinz • Beatrix • Cordelia • Christa • Richter • Seiji Komori|