Dorothy Brown is a secondary character in the anime Love Through a Prism. She is a student at the Saint Thomas Art Academy in London during the early 1900s, where she becomes the first friend and roommate of the protagonist, Lili Ichijoin. Her personality is presented as a contrast to the more serious and driven Lili, as she is characterized by her supportive, cheerful, and somewhat imposing nature. A notable physical trait is that she wears glasses.

Within the story, Dorothy plays a key role in helping Lili navigate her new environment. She is the one who introduces Lili to the academy and its various social circles, acting as a guide to the unfamiliar setting. Her motivations stem from a genuine fascination with Lili, particularly regarding her Japanese heritage. However, this interest is initially based on stereotypes and a superficial understanding of Japanese culture, which can make Lili feel somewhat overwhelmed or confined by Dorothy's assumptions. Despite this cultural awkwardness, her overall function in the narrative is that of a loyal and supportive friend within Lili's immediate circle. While she is not part of the central romantic rivalry or the intense artistic competition between Lili and Kit Church, she is an important figure in the day-to-day life at the academy. In terms of development, early episodes establish her as an energetic but slightly intrusive presence whose relationship with Lili is expected to evolve as they learn more about each other's true selves beyond cultural stereotypes. Her notable abilities are not tied to artistic talent or combat, but rather to her social nature and her role as an initial connector, helping to ground the protagonist and provide a sense of normalcy amidst the pressures of the academy.