You can rent or buy the specific Japanese Dubbed Version (日本語吹き替え版) .
The availability of audio tracks often depends on your region, but you can typically access it using these steps: big hero 6 japanese dub link
In an interview, the film's director, Don Hall, discussed the challenges of dubbing Big Hero 6 into Japanese. Hall emphasized the importance of collaborating with the Japanese voice cast and ensuring that the dub remained faithful to the original story. The director also praised the Japanese dub for its unique energy and humor, which added a new layer of depth to the film. You can rent or buy the specific Japanese
Look for listings titled ベイマックス / 日本語吹替版 to ensure you are getting the Japanese audio. the film's director