Dorothy Brock is a fictional character from the classic 1933 musical film, 42nd Street. She is portrayed as a seasoned Broadway actress who is struggling to maintain her career. Dorothy is known for her strong personality and determination, often facing challenges in the competitive world of theater. In the story, Dorothy becomes involved in a production directed by Julian Marsh, who is trying to revive his career as well. Throughout the film, her character experiences personal growth and ultimately finds a new sense of purpose, showcasing the resilience of performers in the entertainment industry.