Elinor is the 19-year-old eldest Dashwood sister, known for her rational mind and self-control. Following her father's death and their displacement from Norland Park, she takes on the role of family counselor and financial manager. She carefully observes the people around her before trusting them with her feelings, deliberately keeping her own worries private to avoid burdening others.

Marianne is the 16-year-old middle Dashwood sister, characterized by her extreme sensitivity and romantic ideals. She completely rejects societal attempts to moderate her emotions and believes deeply in the power of first attachments. She throws herself into her experiences with music, nature, and romance without reserve, completely disregarding the rigid social rules of her era.

Edward is a shy, intelligent 24-year-old man who prefers a quiet life over his family's grand political ambitions. He lacks the flashy confidence expected of his wealthy background, finding comfort instead in simple domestic pleasures and natural landscapes. He forms a close connection with Elinor Dashwood, though an unexplained reserve often holds him back from acting on his feelings.

Colonel Brandon is a 35-year-old former military man of quiet respectability and substantial wealth. He maintains a reserved, somewhat melancholy demeanor that hides a painful personal history. He possesses a deep appreciation for music and quiet conversation, making him an observant and steady presence in the loud Barton social circle.

Willoughby is a dashing, 25-year-old gentleman staying at the nearby Allenham estate. He bursts into the Dashwoods' lives with frank, graceful manners and a shared passion for art and poetry. He completely dismisses social conventions in favor of immediate intimacy, quickly sweeping Marianne off her feet and securing the approval of her mother.

Mrs. Dashwood is the 40-year-old widow of Henry Dashwood and mother to Elinor, Marianne, and Margaret. She shares Marianne's highly emotional, romantic temperament and completely lacks financial pragmatism. She fiercely loves her daughters and prioritizes their happiness and genuine attachments over practical financial concerns.

John Dashwood is the wealthy heir to Norland Park from his father's first marriage. He is a weak-willed, cold-hearted man who easily allows his wife to talk him out of his financial obligations to his family. His primary concerns are preserving his wealth and improving his social standing among the elite.

Fanny is John Dashwood's wife and Edward Ferrars's sister, characterized by her extreme selfishness and narrow-mindedness. She operates as a master manipulator, convincing her husband to hoard his wealth rather than support his half-sisters. She actively works to ensure her family makes only socially and financially advantageous connections.

Mrs. Ferrars is the wealthy, formidable mother of Edward, Robert, and Fanny. She is a small, thin, proudly disagreeable woman who uses her vast fortune to control her children's futures. She demands absolute obedience regarding social advancement and actively punishes those who step out of line or associate with lower-status individuals.

Robert is Edward's younger brother, a conceited and highly fashionable young man. He surrounds himself with high society and speaks extensively about his own supposedly refined tastes. He serves as a direct contrast to his modest older brother, proudly securing their mother's favor through flattery and adherence to high society rules.

Lucy is a pretty, seemingly agreeable 22-year-old woman with a noticeable lack of formal education. She makes up for her lack of refinement with a sharp social intelligence, constantly flattering those of higher status to secure her position. She aggressively attaches herself to Elinor in order to share uncomfortable personal secrets and establish dominance.

Anne is Lucy Steele's nearly 30-year-old sister, characterized by her loud, vulgar, and overly familiar manner. She completely lacks her sister's cunning, frequently blurting out inappropriate comments about romance and suitors in polite company.

Sir John is Mrs. Dashwood's wealthy cousin, an extremely hospitable man who loves society and rowdy gatherings. He cannot stand to be alone and constantly forces the inhabitants of Barton Park and Barton Cottage into social activities, dances, and outdoor excursions.

Lady Middleton is Sir John's wife, a cold and exceptionally formal woman who cares only for elegant appearances and her children. She completely lacks her husband's genuine warmth, preferring the flattery of superficial guests over intelligent conversation.

Mrs. Jennings is Lady Middleton's widowed mother, a wealthy, cheerful, and frequently vulgar woman. Having successfully married off her own daughters, she dedicates her time to aggressive matchmaking and gathering local gossip. Despite her lack of tact, she possesses a genuinely kind heart and offers serious support when the sisters face emotional distress.

Margaret is the 13-year-old youngest sister of the Dashwood family. She shares Marianne's romantic and highly emotional disposition, frequently accompanying her on long rambles through the countryside and eagerly absorbing local gossip about mysterious suitors.

Mr. Palmer is a wealthy, cynical gentleman who married his wife for her beauty and now openly regrets her silliness. He maintains a posture of constant irritation and studied rudeness, preferring to read the newspaper rather than converse with his in-laws.

Mrs. Palmer is Mrs. Jennings's younger daughter, a pretty but remarkably silly woman. She maintains a constant stream of cheerful chatter and giggles, completely ignoring her husband's insults and deluding herself into believing they have a perfect, affectionate marriage.

Henry Dashwood is the late patriarch of the Dashwood family. Realizing he cannot legally leave the Norland estate to his second wife and three daughters, he uses his dying breaths to extract a solemn promise from his wealthy son to provide generously for them.