Sophie is the daughter of the Earl of Penwood, born out of wedlock. After her father's death, her stepmother forces her into servitude as an unpaid lady's maid. She longs for familial love and connection but maintains a practical understanding of her precarious social standing. Despite the cruelty she faces at home, she works hard and retains a hopeful spirit, eventually seeking employment away from her abusive family.

Benedict is the second eldest of eight siblings in the wealthy and respected Bridgerton family. He possesses an artist's eye and secretly keeps sketchbooks, but he often feels overshadowed by his family's prominence. He holds onto the fantasy of a mysterious woman he met at a masquerade ball while finding himself increasingly drawn to a housemaid he rescues.

The Countess of Penwood. She is vain, demanding, and overly ambitious for her daughters. Deeply insecure about failing to provide the Earl with a male heir, she directs her jealousy and bitterness at his out-of-wedlock daughter, demoting Sophie to the status of an overworked servant.

The matriarch of the prominent Bridgerton family. She is a loving, perceptive mother who desperately wants all eight of her children to find marriages based on genuine affection rather than pure social advantage. She actively involves herself in her children's lives and readily extends warmth to those she finds deserving.

Araminta's younger daughter and Sophie's stepsister. Unlike her mother and older sister, she lacks malice and occasionally tries to converse with Sophie, though she fears her mother's wrath too much to intervene openly. She serves as a frequent target of Araminta's criticism.

Araminta's favored elder daughter. She adopts her mother's arrogant and cruel attitudes, actively tormenting Sophie during their shared lessons and acting entitled to the best society has to offer.

Sophie's biological father. He takes Sophie into his household but remains emotionally distant, refusing to officially acknowledge her as his daughter. His eventual death leaves her entirely at the mercy of his cruel second wife.

The third Bridgerton brother. He shares a frank, teasing, and affectionate rapport with Benedict. He is observant and maturing into adulthood, often providing unprompted perspective to his siblings.

A twenty-one-year-old unmarried Bridgerton sister. She is inquisitive, chatty, and quick to welcome newcomers into the household's informal gatherings.

The eldest Bridgerton brother and the head of the family. He is protective of his siblings and maintains a deep respect for his mother's opinions.

A wallflower and friend of the Bridgerton family. Violet often ensures she is included in social activities. She harbors quiet feelings for Colin.

The grown son of Sophie's second employer. He uses his position of power to harass Sophie and attempts to physically assault her with his friends before Benedict intervenes.

The housekeeper at Penwood House. She is sympathetic to Sophie's plight and quietly helps her prepare for the masquerade by finding her a dress that belonged to the late Earl's mother.

The housekeeper at Benedict's country cottage. She provides practical help and clothing for Sophie during her stay, though Benedict thoroughly dislikes her medicinal tonics.

The caretaker at Benedict's cottage. He assists his wife in managing the property and dealing with unexpected guests.

An anonymous gossip columnist whose society papers are avidly read by the aristocracy and servants alike. She reports on the social events, scandals, and marital prospects of London's elite.