Dorothy, whose real name is Daisy McBean, is a central figure in the Crown Handler film series, acting as the de facto leader of the spy team known as White Pigeon. Officially, she is twenty years old, though for her undercover role as a student at Queen's Mayfair Academy, she poses as a seventeen-year-old. Her cover identity borrows her mother's first name, while her true surname, McBean, hints at a possible Irish heritage.

Dorothy's background is marked by hardship in the old Kingdom territory before the London Revolution. Her father, Danny McBean, was an engineer who lost an arm and subsequently turned to alcohol, becoming a violent presence in her life. Her mother having left the family, Dorothy eventually ran away from home to escape her father's abuse. It was during this tumultuous period that the revolution divided the city, and to survive, she was recruited into the Commonwealth's spy agency, Control. This past left her with complex feelings; she hates what her father did but still carries echoes of him in her habits, such as her fondness for drinking from a flask—a habit she shares with him—and occasionally singing a song he used to love.

In terms of personality, Dorothy presents a cheerful, outgoing, and somewhat rough exterior, often playing the role of a rebellious and cool older sister to her teammates. She is highly dependable, resourceful, and brings a spirited energy to her work, often tackling dangerous missions with a smile. Despite her proficiency in using seduction as a tool for espionage, she is noted to be surprisingly pure-hearted and emotional. This emotional core is both her strength and her weakness; her deep loyalty to her friends and her own moral compass sometimes clashes directly with the cold pragmatism required of a spy. This inner conflict is highlighted by her willingness to bend the truth or lie to her superiors in Control to find a solution that protects her team, rather than simply following orders.

Throughout the Crown Handler storyline, Dorothy’s role is fundamentally that of the team's anchor and primary field operator. She serves as the main point of contact with their handler, L, and often coordinates the group’s movements. Her practical skills are invaluable; she is the team's primary driver and an elite marksman, famously wielding a unique, five-shot revolving sawed-off shotgun. She demonstrates significant courage and physical capability, such as when she personally saves Princess Mary from a perilous fall out of a window. In the escalating power struggles within the Kingdom's royal family following Prince Edward's assassination, Dorothy’s responsibilities grow. She is trusted to take on high-risk infiltration roles, such as posing as a maid in the royal household alongside Ange to gather intelligence on the succession crisis.

Her key relationships within the team define her character arc. She is a long-time friend and partner of Ange le Carré, having known her since their spy academy days. This bond is central to her world, and she often serves as a balancing force to Ange’s more ruthless, goal-oriented nature. While Ange is loyal to a specific outcome—keeping Princess Charlotte safe at any cost—Dorothy’s loyalty is more personal and familial, concerned with the wellbeing of all her friends. She acts as the big sister figure to the younger or less experienced members of the team, including Chise and Beatrice, constantly worrying about everyone else’s safety. This dynamic forces her to navigate the treacherous gap between her duty to the Commonwealth and her protective instincts, a conflict that lies at the heart of her development as she struggles to find a path that allows all her friends to survive.