Tadashi Hamada is a fictional character who appears in Walt Disney Animation Studios' 54th animated feature, Big Hero 6. The film is inspired by a Marvel comic book of the same name. He is voiced by Daniel Henney. In addition, Tadashi is ethnically Japanese. In the film, Tadashi, a student at the San Fransokyo Institute of Technology, is the creator of Baymax, as well as the older brother of Hiro Hamada. Baymax, as described in the film, is a personal health care companion.