Kaspar Blankenheim

Caspar Blankenheim is a marquis of Elphegort and the husband of Margarita Blankenheim. He was the first person poisoned by his wife in the Toragay Serial Killings due to his multiple affairs.

Early Life
When Caspar was young, he had been close friends with Margarita Felix. At the time, they made a promise with each other although Caspar forgot about it some time after. Years later, Caspar became the Marquis and, interested in acquiring Doctor Felix's wealth, influenced a political marriage between himself and Margarita, allying their two families and linking together their finances.

Shortly afterward, Caspar openly cheated on Margarita, bringing multiple women to their home in Toragay and blatantly philandering with them in front of her. Eventually, he made it apparent to his wife that he neither remembered nor cared about their childhood promise and held no romantic interest in her, only using her for financial convenience.

Toragay Serial Killings
In EC 609, Margarita approached her husband, concerned about his lack of sleep due to stressful circumstances. Caspar was offered a "gift" from his wife in the form of a sleeping medication to help with his insomnia and allowed his wife to administer it to him. Slipping into a deep sleep, Caspar lapsed into a coma before dying of the poison.

Legacy
After his death, Caspar's name would be mentioned in news reports as having passed away and would be the first of many victims who were killed by his wife, Margarita. By the time Elphegort hired the Freesis Foundation to investigate the incident, the city was already a ghost town.

Gift from the Princess who Brought Sleep (EC 609)
In Gift from the Princess who Brought Sleep, the first portion of the song is directed at him, discussing his relationship with Margarita; in spite of his lack of concern for her, Margarita still loves him. Caspar is the first person to receive the "gift", and during an instrumental, it's revealed that he's passed away as a result.

Connections to Other Characters
Margarita Blankenheim: Although Caspar made some sort of childhood promise to her, he had forgotten it by the time they became adults. Their marriage was born from politics, and it's clear that he only wanted her wealth. Soon, Margarita administers the "gift" to him, and he dies some time after that.

Conceptualization and Origin

 * Caspar's name is derived from the Hebrew word for "treasurer"; traditionally, the name is assigned to one of the biblical Three Magi and translates as "Master of the Treasure".
 * His surname, Blankenheim, is the name of two German municiplaties; Elphegort, Caspar's native country, is inspired by Germany.
 * In numerology, the name Blankenheim is associated with being emotional, sentimental, inquisitive, independent, and ruled by love, needing encouragement or affection when unloved and feeling unhappy when there is a lack of harmony.

Curiosities

 * Caspar, portrayed by KAITO, references his Vocaloid's other characters and their connection to Greed due to his name's meaning and the economical motivations behind his marriage to Margarita.
 * Despite this, he ironically exhibits traits of Duke Sateriajis Venomania, the sinner of Lust murdered by Kachess Crim.