The Thénardiers, commonly known as Monsieur Thénardier (/təˈnɑːrdi.eɪ/; French pronunciation: [tenaʁdje]) and Madame Thénardier, are fictional characters, the secondary antagonists in Victor Hugo's 1862 novel Les Misérables and in many adaptations of the novel into other media.
They are ordinary working-class people who blame society for their sufferings. Early in the novel, they own an inn and cheat their customers. After they lose the inn in bankruptcy, they change their name to "Jondrette" and live by begging and petty thievery. They serve, alongside Javert, as one of the two arch-nemeses of the story's protagonist, Jean Valjean. While Javert represents the justice system that would punish Valjean, the Thenardiers represent the lawless subculture of society that would blackmail him. The novel portrays them as brutal and abusive figures; some adaptations transform them into clownish characters, though sometimes still criminals, to provide comic relief from the generally more serious tone of the story.
When Hugo introduces the Thénardiers, they have two daughters named Éponine and Azelma, whom they spoil and pamper as children, and a son called Gavroche. They run an inn in the town of Montfermeil. The Thénardiers are both described as being very ugly. He is "a skinny little runt, pale, angular, bony, rickety, who looked sick but was as fit as a fiddle". She is "tall, blond, ruddy, barrel-like, brawny, boxy, huge, and agile".
Fantine, a struggling single mother, arranges for her daughter Cosette to stay with them, if she pays a regular fee. The Thénardiers treat Cosette very badly, dressing her in rags, selling her clothes for 60 francs in the streets of Paris,forcing her to work, and beating her often. Fantine is eventually reduced to working as a prostitute in order to earn enough money to meet the Thenardiers' demands, as M. Thénardier extorts more money from Fantine by claiming that Cosette is ill. The Thénardiers spend the money Fantine sends them on their daughters.