You can't do the Big Hero 6 characters without doing Tadashi. It's just not done.
Let me just say this now: I have an unwavering, shameless fangirl bias for Tadashi. That fact will never change. He's just too beautiful of a person.
Let me also say this: I used Tadashi and his desire to help the world by inventing Baymax as evidence in an FRQ for my AP Lang class. This essay will be looked at and graded by three of my classmates, as well as my teacher. I am fairly certain I will get judged.
No shame at all!
Tadashi Hamada (c) Marvel/Disney
Art (c) elricbrothersfan (me!)