He is an astute and hypocritical French marquis who holds the family's debts. He feigns fake friendship and salvation for the General—who is in a difficult position with his family and business—but is actually the only one who has tightened the noose around the family's neck. Although he once had a secret and passionate relationship with Polina, money is his true love. When the Grandmother's inheritance disappears, he casts off all his politeness and feigned friendship; as if nothing happened, he abandons Polina with an emotionless farewell letter and returns to Paris.
There is doubt throughout the novel as to whether he is actually a marquis at all ('A parvenu, a name without substance'). He possesses the psyche of an intelligent merchant who tries to insert himself into the respectable class of Europe through cunning moves, such as lending money or scouting for opportunities.
He is a flashy and polite-looking man who dresses fashionably and elegantly, projecting the image of a perfect gentleman ('tres comme il faut') to outsiders.
General
A fool whom he exploits for his capital and nominally supports.
Matmazel Blanche
A spiritual partner whose goals align with his own.
Aleksey İvanoviç
An insolent young Russian whom he tries to subdue by looking down upon him, as he perceives his existence as a threat.
Polina Aleksandrovna
A victim whom he held as a secret lover before casting her aside when things went south.