Jehan du Moulin
Another comic character, Jehan du Moulin, alternately called Joannes Frollo de Molendino, is Claude Frollo's younger brother and the quintessential Prodigal Son.
Money burns a hole in Jehan's pocket, especially when there are drinks and prostitutes to be had, but his older brother just can't say no to him. Jehan keeps cropping up everywhere in the book to cause trouble and say bawdy things (though you should take a look at our "Character Role Identification" section to see why they are important bawdy things). He comes to a rather gruesome end at the hands of Quasimodo.
The Sack Woman
The Sack Woman, a.k.a. the recluse, a.k.a. Sachette, a.k.a. Paquette la Chantefleurie, formerly of Reims, has quite the backstory: she has lived in a door-less cell called the Rat Hole for fifteen years, her daughter was taken and presumably eaten by gypsies, and she hates Esmeralda more than Indiana Jones hates snakes. Needless to say, she doesn't get out much. But she's got a crazy, totally coincidental twist to her story that helps amp up the novel's tragedy-meter to a whole new level.
Djali is Esmeralda's über-talented goat. For a goat, she actually plays a pretty big role in the story: aside from being Gringoire's love interest, she gives away Esmeralda's crush on Phœbus, she stands trial for sorcery, and she narrowly escapes death. But don't worry, all you animal lovers! We like to imagine she lives out her days in a field in France making cheese.
Clopin is the head of the Cour des Miracles, the leader of the Tramps, the King of Thunes, and the supreme ruler of the realm of slang. Sometimes he's even a beggar. He's got so many titles on his résumé to make anybody jealous.
Fleur-de-Lis is Phœbus's wealthy bride-to-be. She's green with envy of Esmeralda's good looks, but Phœbus manages to sweet-talk himself back into her good graces. Her job is to be respectable and boring.
Charmolue is the King's Proctor and is in cahoots with Frollo to help convict Esmeralda. He's the nasty guy who oversees all the "justice." Djali does a mean imitation of him.
Yes, he was a real king of France. In the novel he visits Claude Frollo in his cell, and then later on while Notre-Dame is being besieged and he gives this spiel about how the monarchy should be all-powerful and how the Bastille will never fall (oh, the irony).