Cattleya Baudelaire stands as the most requested Auto Memories Doll at the CH Postal Company, renowned for her specialization in clients with love troubles. She possesses a tall, full figure, long wavy black hair reaching her lower back, and amethyst eyes. Her distinctive attire includes a red bustier, charcoal gray shoulder-to-elbow garments, and blue leather shorts, accessorized with a beaded choker and bracelets; her skin appears tanned in the anime adaptation, differing from the light novel's pale description, and some light novel accessories are omitted.

Before joining CH Postal, Cattleya ran away from problematic parents and was taken in by Claudia Hodgins, experiencing periods of loneliness without acquaintances. She became one of the company's initial employees. Her background includes work as a showgirl with deceased soldier patrons and martial arts training, granting her exceptional physical strength and self-defense skills, which she leverages confidently, sometimes resorting to force to resolve conflicts.

Her personality blends warmth, sensitivity, and pride. She exhibits maturity, politeness, and reliability, supporting colleagues and clients alike. Though radiating confidence, she feels self-conscious about her appeal to others and dislikes being alone, privately equating solitude with a lack of charm. She displays a playful, teasing side, particularly toward Hodgins, but can become childish when situations defy her expectations. She deeply values all forms of love—romantic, platonic, familial—considering it essential to life, though she admits uncertainty about romantic love despite recognizing its occurrence.

Professionally, her expertise lies in empathizing with clients and articulating their emotions into letters, especially for those experiencing love. This specialization led to high-profile assignments, including composing correspondence for Prince Damian and Princess Charlotte. Her typing combines remarkable speed, extensive vocabulary, and emotional precision, solidifying her reputation.

Key relationships define her journey: She mentors Violet Evergarden with kindness and guidance, comforting her during depression over Gilbert Bougainvillea's presumed death and criticizing Hodgins for revealing this news insensitively. She harbors longstanding, unreciprocated feelings for Hodgins himself; his occasional insensitivity to women's emotions frustrates her, yet their bond, rooted in mutual trust, allows candid discussions about serious matters. Her dynamic with Benedict Blue evolves from rivalry to romance. Initially contentious, their arguments were frequent at the company. Cattleya concealed care beneath irritation, tending to his injuries and respecting his leadership. When Benedict disappeared for three months to search for his long-lost sister, she resented his lack of contact and grappled with loneliness. After rejecting a marriage proposal from perfumer Chris—realizing her heart belonged to Benedict—she attempted to confess on a bridge. Benedict returned unexpectedly, overhearing her; a physical struggle ensued before they reconciled. He explained his absence, and she affirmed she would seek him if he vanished again, solidifying her commitment to a love-based relationship.

Her character arc progresses from loneliness to emotional fulfillment. Rejecting Chris' logic-driven proposal demonstrated her growth in prioritizing genuine affection. Her confession to Benedict and their reconciliation marked a resolution to her romantic struggles, aligning with her belief that relationships must stem from authentic feelings.