Julian Marsh is a fictional character from the musical 42nd Street, which premiered in 1980. He is a determined and ambitious Broadway director who is passionate about producing a successful show. His character embodies the challenges and excitement of the theater world during the Great Depression. In the story, Julian faces various obstacles, including casting a young and inexperienced actress named Peggy Sawyer. Throughout the musical, he navigates the ups and downs of production, showcasing his dedication to the art of theater and the pursuit of dreams in a competitive environment.