"Mary Lennox" is the central character in Frances Hodgson Burnett's novel "The Secret Garden," which has been adapted into several films. The story follows Mary, a spoiled and lonely girl who is orphaned after a cholera outbreak in India. Sent to live with her reclusive uncle in a vast, neglected estate in England, Mary discovers a hidden, locked garden. As she befriends her sickly cousin Colin and a local boy named Dickon, she transforms the garden and herself, fostering healing, friendship, and a connection to nature.

In the movie "Mary Lennox," Mary is initially portrayed as a spoiled and lonely girl with a strong will and a somewhat abrasive demeanor. She is often aloof and dismissive of others due to her privileged upbringing. However, as the story progresses, she undergoes significant character development. Through her experiences in the secret garden and her interactions with others, she becomes more compassionate, curious, and open-hearted, ultimately transforming into a more empathetic and nurturing individual.

In various adaptations of "The Secret Garden," Mary Lennox develops a close friendship with Dickon, a kind and nature-loving boy. While their bond is deep and affectionate, it is often portrayed more as a strong friendship and companionship rather than romantic love. The story focuses on themes of healing, friendship, and personal growth rather than romantic relationships. Mary's feelings for Dickon can be interpreted as a youthful admiration, but they do not explicitly depict a romantic love.

In the movie "Mary Lennox," Mary’s uncle is Archibald Craven. He is a wealthy but reclusive man who lives at Misselthwaite Manor in England. Following the death of Mary’s parents, she is sent to live with him. Archibald is portrayed as a grieving man, deeply affected by the loss of his wife, which impacts his relationship with Mary and the overall atmosphere of the manor. His character undergoes development throughout the story as he interacts with Mary and begins to address his own emotional struggles.