Mari Shimizu, born on June 7, 1936, is a celebrated Japanese voice actress whose work has captivated audiences for decades. Known for her versatile vocal performances, she gained significant recognition for her role in the beloved animated feature "Undersea Super Train: Marine Express" (1979). This film is a cherished piece in the history of Japanese animation and holds a special place among collectors, not only for its imaginative storytelling but also for Shimizu's unforgettable contribution to its vibrant characters. Collectors seek out Shimizu's work not just for its nostalgia but also for its cultural significance within the anime landscape. Her involvement in various other projects, including adaptations of classic literature and contemporary tales, further solidifies her status in the industry. With her performances often released on limited-edition VHS and Blu-ray, Shimizu remains a pivotal figure for physical media enthusiasts who value the artistry of voice acting in animated films.