Dr. Nossori is a supporting character in the anime film Mazinger Z: Infinity. He is one of three veteran scientists working at the Photon Power Laboratory, alongside his long-time colleagues, Dr. Sewashi and Dr. Morimori. As a group, they are often referred to simply as the three scientists, and they serve as the elderly, experienced technical staff supporting the lab's operations under the direction of its chief, Sayaka Yumi. Dr. Nossori is characterized by his unassuming and somewhat slow-moving nature. His name in Japanese suggests a languid or unhurried demeanor. He has an affable and good-natured personality, often contributing to the light-hearted, comic relief moments that the trio provides, though he is capable of being serious and focused when the situation demands it. Physically, he is depicted as a short, elderly man with a large head, a prominent nose, thick white hair, and a matching mustache, typically wearing small round glasses.

As a scientist, Dr. Nossori specializes in the field of energy research. In the world of Mazinger Z, he was originally an apprentice under the super robot's creator, Professor Juzo Kabuto, alongside Professor Gennosuke Yumi. This background establishes him as a figure of considerable knowledge and experience, even if he is not a frontline fighter. His primary motivation is the support of the Photon Power Laboratory's mission to protect the world from new threats, using his scientific expertise to maintain, repair, and potentially develop technology to aid the Mazinger robot and its pilots.

In the story of Mazinger Z: Infinity, which takes place ten years after the original series, Dr. Nossori continues his role as a dedicated member of the laboratory staff. His key relationships are with his two fellow scientists; the trio functions as a cohesive unit, and their long history of working together is evident in their seamless cooperation. He also maintains a professional relationship with Koji Kabuto, the former pilot of Mazinger Z, who has himself become a scientist in the intervening years, and with Sayaka Yumi, now the director of the laboratory. His role in the film, while not central to the main action, is to provide crucial off-screen technical support and assistance. In one instance, he and his colleagues help create a diversion by drawing the attention of the antagonist Dr. Hell's forces, allowing Koji Kabuto to reach Mazinger Z.

While Dr. Nossori does not undergo significant personal development within the film himself, his continued presence represents the enduring legacy of the original Photon Power Laboratory and its fight against evil. His steadfastness provides a sense of continuity and reliability. His notable abilities are not combat-oriented but lie in his scientific acumen, particularly concerning energy systems, and his years of hands-on experience in maintaining and operating the lab's advanced technology.