Tadashi Hamada is a major character in Disney's 2014 animated feature film Big Hero 6. A gifted robotics student living in San Fransokyo, he was the older brother of Hiro Hamada and the creator of Baymax.
Tadashi's sudden death in a mysterious fire catalyzes the events of the film, leading Hiro, Baymax and Tadashi's best friends to band together to investigate the "accident" and catch the culprit responsible for it.