Étienne is a 21-year-old mechanic who loses his railway job after striking his boss. He takes a grueling position at the Le Voreux mine, where the dangerous conditions and meager pay deeply disturb him. Naturally inclined toward education and political theory, he becomes increasingly radicalized and contemplates organizing a strike to improve the workers' lives.

Catherine is the 15-year-old daughter of Toussaint and La Maheude. Though small in stature, she is a remarkably strong worker who guides new hands in the coal pit. She exhibits a cheerful demeanor but lives under the heavy expectations of both the mining company and the men around her.

La Maheude is Toussaint's practical and determined wife. She manages the household's meager finances, stretching every resource to keep her family fed. Sensible but worn down by poverty, she approaches life with a mix of resourcefulness and quiet desperation.

Maheu is a hardworking and respected miner who leads a team at Le Voreux. He possesses a strong sense of duty and generally accepts the strict hierarchy of the mining company. Despite his gruff exterior, he cares deeply about his family and providing for them.

Chaval is an aggressive and highly competitive young miner. Driven by ego and a constant desire to elevate his own status, he views newcomers as threats and relies on intimidation to assert dominance. He is particularly cruel in his romantic pursuits, using force and manipulation to maintain control.

Souvarine is a Russian political exile and anarchist working as a mechanic at Le Voreux. Behind a calm, delicate exterior lies a fierce commitment to total destruction as the only viable path to societal change. He scorns moderate political reforms, preferring apocalyptic violence over gradual progress.

Known universally as "Bonnemort" for surviving multiple near-fatal accidents, Vincent is an elderly patriarch who has worked at the mine for fifty years. His body is ravaged by the harsh conditions, yet he views the faceless mining company with a sense of religious awe.

Négrel is the 26-year-old engineer at Le Voreux and the nephew of the mine manager. He possesses a sharp, pessimistic demeanor and frequently expresses cynical contempt for both the miners and his wealthy peers. Despite his harsh discipline, he shows surprising courage when moving through the dangerous mine shafts.

Rasseneur is a former miner who was fired for leading a strike and now operates the local pub. He maintains a moderate political stance, preferring practical negotiations over extreme revolution, which eventually puts him at odds with the increasingly radicalized workers.

M. Grégoire is a wealthy shareholder in the Montsou mine who lives a comfortable, sheltered life at his estate, La Piolaine. He firmly believes in the social hierarchy, considering his inherited wealth a reward for his family's past prudence, and remains oblivious to the suffering of the working class.

Cécile is the 18-year-old daughter of the wealthy Grégoire family. Raised in extreme comfort and shielded from hardship, she is a picture of well-fed health who views the miners with a mixture of fear and naive, inadequate sympathy.

M. Hennebeau is the strict and detached manager of the Montsou mine, serving as the local face of the elusive corporate owners. He is deeply unhappy in his passionless marriage, channeling his frustrations into maintaining order at the mine and seeking the approval of the board of directors.

La Mouquette is an 18-year-old worker known for her voluptuous figure and boisterous sense of humor. Despite her coarse reputation and the jokes made at her expense, she is generous, fastidiously clean, and fiercely loyal to her friends.

Zacharie is the 21-year-old eldest son of the Maheu family. He works in the pit but often distracts himself with youthful games, drinking, and his relationship with Philomène, momentarily escaping the crushing reality of his environment.

Jeanlin is the cunning and physically frail 10-year-old son of the Maheus. He works in the mine leading horses but spends his free time scavenging and bullying younger children in the village, displaying a hardened, survivalist mentality.

Alzire is the frail, 9-year-old daughter of the Maheu family. Despite a hunched back and poor health, she acts as a mature, responsible caretaker for the younger children while her parents labor in the mines.

M. Deneulin is the independent owner of the modernized Jean-Bart pit. Unlike the distant corporate owners of Montsou, he is directly involved in his business and risks his own capital to keep his mine operational, giving him a slightly more paternal view of his workers.

Maigrat is the local shopkeeper who exercises immense control over the mining families. He uses his monopoly on food and credit to extort the villagers, making him a primary target for their accumulated rage.

Lénore is the 6-year-old daughter of the Maheu family. Her pale skin and stunted growth physically manifest the severe malnourishment and poverty afflicting the mining village.

Henri is the 4-year-old son of the Maheu family. Like his siblings, he suffers from the extreme poverty of the household, completely reliant on his parents' meager and shrinking rations.

Estelle is the infant daughter of the Maheu family. She requires constant care and nursing, representing the continuous cycle of new life born into extreme destitution.

Old Mouque is the elderly caretaker of the mine's horses and the father of La Mouquette. He lives in a small space near the abandoned pit Réquillart and maintains a quiet, enduring presence amid the chaos.

Pluchart is a former mechanic turned socialist revolutionary and official in the International Association of Workers. He operates as an intellectual organizer, inspiring the workers with grand speeches about collectivism.

Pierron is a cautious, compliant miner who carefully avoids conflict with the Company. He benefits financially from his wife's relationship with a superior, allowing his household to remain out of debt.

La Pierronne is a young, beautiful woman who maintains the neatest house in the village. She leverages her attractiveness to secure financial perks, keeping her family comfortable while others starve.

Dansaert is an overman at Le Voreux who acts as a direct enforcer for the mine's management. He uses his position of authority to extract personal favors from the villagers.

Levaque is a rough, frequently intoxicated miner who works alongside Maheu. He is prone to violent outbursts at home but remains a dedicated participant in the miners' communal grievances.

La Levaque is the harried, outspoken wife of Levaque. She manages a chaotic household, takes in a lodger to help pay the rent, and is heavily involved in the village's rumor mill.

Philomène is the sickly 19-year-old daughter of the Levaque household. She has two children with Zacharie Maheu and constantly pushes him to formalize their marriage so she can escape her chaotic home.

Bouteloup is a stone worker who rents a room from the Levaque family. He serves as a passive but ever-present figure in their household dynamics, quietly contributing to the rent.

Lydie is the 10-year-old daughter in the Pierron household. She is terrified of Jeanlin Maheu but follows his orders out of a desperate need for companionship in the harsh village environment.

Bébert is a young boy from the Levaque household who acts as a reluctant accomplice to Jeanlin's schemes. He finds solace in Lydie's company as they both endure Jeanlin's tyrannical behavior.

Widow Desire is the proprietor of a large local pub who is deeply sympathetic to the miners' suffering. She provides a safe haven for their secret organizational meetings.

Father Ranvier is the new local priest who preaches a form of Christian socialism. He believes that God will ultimately punish the wealthy for their greed and sides ideologically with the poor workers.

Madame Rasseneur helps run the Advantage pub alongside her husband. She possesses a fiery temperament and frequently voices more radical political opinions than her moderate husband.

Jules is a young military recruit stationed at the mine during the riots. He misses his home and holds no strong political opinions, simply following the orders given to him by his superiors.

Madame Hennebeau is the wealthy, unsatisfied wife of the mine manager. She views the miners' poverty with a mix of aesthetic appreciation and repulsion, caring far more about her social standing and romantic affairs than the desperate conditions surrounding her.

Madame Grégoire is a wealthy shareholder's wife who dedicates her life to absolute comfort. She completely supports her husband's belief in the social hierarchy and limits her interactions with the poor to offering inadequate, self-congratulatory charity.