Tadashi Hamada

Tadashi Hamada is a major protagonist in the Disney animated feature film Big Hero 6. The older brother of Hiro Hamada, Tadashi is a young prodigy of the San Fransokyo Institute of Techonology, excelling on robotic research, as well as being the original caretaker of Baymax, a healthtaker companion designed to help others in need. His death at the Insitute marked Hiro's motivation to form the Big Hero 6 team. Per Tadashi's wish, the group functions as a supporting organization, as well as combatant, helping the people in needed.

Regarding the villain wars, Tadashi appears in the second Disney Heroes vs. Villains along with Hiro and his friends, though it's unknown if his role would follow the same one as seen in original film's script or it would take another approach in the story.