He has not been has been around for a long time, both in reality and in fiction, but the Russian oligarch and his entourage are already well-known figures. They spend their petrodollars on yachts and Cristal champagne and amaze Westerners with their debauchery. The oligarch’s caretaker has a thick neck, dead eyes and a conscience unshaken by violence. Noir-like thrillers such as “McMafia” are their genre.