Noir is a Rail Lord who works for the Daitei Railway as a special Rail Lord. She is a quiet and hardworking girl who takes her duties seriously. Her most defining trait is an enormous appetite and poor fuel efficiency; she becomes hungry very quickly and will start to cry if she does not eat, though this reaction is a consequence of her physical needs rather than genuine sadness. This trait is often a source of lighthearted moments in the series. In terms of appearance, Noir is a teenage girl with shoulder-length black hair and purple eyes. As a Rail Lord, her primary role in the story is to assist with railway operations and contribute to the ongoing revival of the railway, which is a central theme of Rail Romanesque 2. Her motivations center on fulfilling her responsibilities as a special Rail Lord, and her hardworking nature drives her to perform well despite her frequent hunger. Information about her deeper backstory, significant development over the course of the series, and specific key relationships with other characters is limited in available sources, but she is listed as a main character in the show. Her notable abilities include her role as a Rail Lord, which is implied to involve a connection to a locomotive and the ability to perform tasks related to railway service, though further details of her powers are not extensively documented.