Tadashi is a common Japanese name that can be used for both males and females. It often means "loyal" or "true," reflecting positive qualities in Japanese culture. The name is popular in Japan and can be found in various forms of media, including anime and manga. In popular culture, one notable character named Tadashi is Tadashi Hamada from the animated film Big Hero 6. He is portrayed as a brilliant inventor and the older brother of the main character, Hiro Hamada. Tadashi's character plays a significant role in the story, emphasizing themes of family, innovation, and heroism.