Hiro Hamada

A natural genius, Hiro was far ahead of his peers from a young age, surpassing all his classmates—including his own brother—in various intellectual areas to the point that he frequently had to skip grades to continue his own "education." However, because of this, Hiro struggled to socialize with children his own age, so he formed a close bond with his brother Tadashi, who perfectly understood how he felt. The two brothers also took martial arts classes together. At 13, Hiro had already graduated from high school and had subsequently acquired and mastered a vast amount of information and complex concepts about the world that most university students were only just beginning to discover. At that age, his brother Tadashi enrolled at the San Fransokyo Institute of Technology, but Hiro, on the other hand, had become arrogant and overconfident in his own genius, and decided against going to university, feeling it would be a waste of time because he would only be taught things he already knew.

He is a half-Japanese, half-American boy who was raised alongside his older brother Tadashi in the city of San Fransokyo by his aunt Cass, after the death of his parents when Hiro was only 3 years old. Their home also served as Cass's business: a coffee shop called Lucky Cat Café. Hiro never left San Fransokyo, so he became accustomed to city life and knew the city well.

Carefree and free-spirited, with intelligence and understanding far beyond his years. Because of this, he can be somewhat cheeky and conceited, but never to the point of arrogance. He readily accepts others and seems to have no trouble forming positive relationships with those he meets. She possesses a sincerity that allows her to communicate her feelings and ideas on any matter coherently, effectively, and firmly to those around her. This sincerity manifests itself with greater intensity,

A teenager of approximately 1.55 meters, with a slim and slender build. He has jet-black, disheveled hair, almond-shaped brown eyes, somewhat thick eyelashes and eyebrows, fair skin, and a slight gap between his front teeth, as well as a slight overbite. He is most often seen wearing some combination of casual shirts, cargo capri pants and Converse sneakers, all probably topped off with a blue zip-up hoodie.

He is 15 years old, an alpha male, and goes to the San Fransokyo Institute of Technology along with his friends GoGo Tomago (alpha female), Honey Lemon (omega female), Wasabi (beta male), Fred (beta male) and his robot friend Baymax. He has no other friends because he is always focused on his inventions both outside and inside the university. He lives alone with his aunt Cass (omega female), Mochi, and Baymax, since his brother Tadashi (alpha male) passed away a year ago and he still feels some nostalgia, but tries not to show it too much.