Lottie is an independent woman in her late twenties working two jobs to support her younger half-sister. She cleans houses for the wealthy and waitresses at a local bar while also taking university psychology classes. Driven by past family trauma and current financial instability, she is fiercely protective of her small family unit. She approaches her difficult circumstances with pragmatism and a dry sense of humor.

Ollie is a billionaire duke and property developer belonging to the British royal family. Accustomed to immense privilege and authority, he often acts as a commanding protector toward those in his circle. Despite his entitled upbringing, he harbors a genuine attraction to his cleaner and exhibits strong loyalty to his family members.

Hayley is Lottie’s eight-year-old half-sister. Following the loss of her parents, she experiences selective mutism and communicates almost exclusively with Lottie through whispers and physical gestures. She is a highly observant and sensitive child who maintains a deep attachment to her older sister.

Blake is Claire’s husband and Ollie’s brother-in-law. He presents a polished exterior to high society but exhibits manipulative and cruel behavior behind closed doors. He struggles with alcohol use and poses a quiet but immediate physical threat to the people around him.

Vicky is Ollie’s half-sister and a highly intelligent financial advisor. Because she is on the autism spectrum, she processes the world differently and sometimes experiences sensory overload. She possesses a candid, unfiltered communication style and observes her surroundings with keen intelligence.

Margot is Ollie’s mother and a matriarch figure within their wealthy family. She places high value on social expectations and orderly control, holding strong opinions on who associates with the royal family. Behind her authoritative exterior, she exhibits a maternal and protective instinct toward those she considers vulnerable.

Claire is Ollie's polished sister. She appears well-kept and adheres to the expectations of her high-society life, maintaining an image of perfection for her peers. Beneath this elegant facade, she lives in a state of quiet fear due to her husband's volatile behavior.

Florrie is Claire and Blake’s young daughter. She is a confident, talkative girl who easily bridges the gap between different social circles. Her bright personality serves as a stark contrast to the quiet anxiety present in her family.

Felix is Ollie’s best friend and business partner in his development company. He is supportive of Ollie and often serves as a sounding board for his friend's complicated personal life, offering a slightly more grounded perspective than the royal duke.

Matt is one of Ollie’s closest friends who works a manual labor job. He offers practical, grounded advice regarding Ollie's romantic dilemma, providing a working-class viewpoint within the duke's inner circle.

Mrs. Higgins is the elderly, reliable housekeeper at the Harding mansion. Her presence and competence allow Ollie to keep Lottie on staff despite Lottie's frequent clumsiness and lack of professional cleaning skills.

Brenda is the paternal grandmother to Hayley. She firmly believes she can provide a more stable, affluent home for her granddaughter, creating a looming custody threat that heavily influences Lottie's decisions.

Tony is Hayley's paternal grandfather. Along with his wife, he seeks custody of Hayley, believing their financial stability makes them better and more appropriate guardians than a struggling young waitress.

Giles is a wealthy businessman and associate of Blake. He acts entitled and disrespectful toward service workers, viewing women in the service industry as objects for his amusement.

Mike is a professional acquaintance who catches Vicky's eye. He proves to be a calming and supportive presence during moments of high stress, demonstrating patience with Vicky's unique needs.

Lucy is Felix's romantic partner. She frequently accompanies him to business dinners and social functions, integrating smoothly into the Harding family's extended circle.

Harry is a business partner in Ollie's development firm. He possesses a large ego that occasionally requires careful management during professional negotiations to keep deals on track.