Lucy is the English dub name used for the character Shizuka Minamoto in the Cinar English adaptation of the anime Doraemon. She is a young schoolgirl who serves as a central figure in Nobita Nobi's life, acting as his closest friend and primary love interest. Her background is that of a well-mannered and academically capable student who lives with her parents, Yoshio and Michiko Minamoto, in the same neighborhood as her classmates.

Her personality is defined by kindness, patience, and a gentle but firm sense of responsibility. She is often the voice of reason among her friends and does not shun Nobita despite his poor grades, lazy habits, and repeated failures. Instead, she consistently tries to encourage him to improve, even though her efforts rarely succeed. She is represented by the color pink and is known for her tidy appearance, typically seen in a pink shirt and skirt. She values cleanliness and has a notable fondness for bathing, which becomes a recurring source of comic situations when she is inadvertently interrupted by the misuse of futuristic gadgets.

Her motivations are rooted in genuine care for those around her. She wants her friends to do well and maintains a harmonious social circle. She also harbors personal interests that are somewhat unconventional for her gentle image. She has a strong passion for sweet potatoes, which she prefers to keep private, and she plays the violin with a skill level that is comically poor, comparable to the off-key singing of another classmate. She also reluctantly takes piano lessons to fulfill her mother's expectations, which sometimes prevents her from joining her friends' activities.

In the story, Lucy occupies the role of the kind and supportive figure who balances the group's dynamic. While Nobita, Gian, and Suneo often get into trouble due to laziness, greed, or mischief, Lucy typically represents the moral center. She is an animal lover and keeps pets at home, including a dog and a canary, and she has been involved in stories where she helps care for or rescue animals.

Her key relationships are primarily with her classmates. Her bond with Nobita is the most significant, as she is his longtime crush and the person he ultimately marries in the future. She is also close to Hidetoshi Dekisugi, a highly popular and academically gifted student, though their relationship is strictly platonic. She gets along with Gian and Suneo as friends, though she is sometimes exasperated by their behavior. Her relationship with Doraemon is friendly, as she often benefits from or witnesses the gadgets he provides.

Lucy does not undergo a dramatic transformation over the course of the series, but her character is marked by consistency and reliability. She remains a steady presence whose kindness and patience rarely waver. She occasionally shows moments of frustration, jealousy, or embarrassment, particularly when caught in awkward situations involving Nobita's gadget accidents, but she never holds lasting grudges.

As for notable abilities, Lucy does not possess any supernatural or exaggerated skills. Her strengths are her intelligence, her strong academic performance, and her emotional intelligence. She is a capable student and a considerate person who can navigate social situations with diplomacy. Her only recurring physical ability shown in the series is her terrible violin playing, which is a running gag. Her primary ability within the narrative is her role as a stabilizing influence on Nobita, giving him a reason to strive for better outcomes even when he consistently falls short.