
Planning to do a mass scan on San Fransokyo to find out his identity, Hiro builds a new suit for Baymax, equipped with offensive capabilities and rocket-propelled flight, and designs suits for his friends, organizing Big Hero 6 to bring Yokai to justice. Baymax reveals that he scanned Yokai before they sunk and has information on him, and they retreat to Fred's house, surprisingly a mansion. Yokai looks on, and, thinking them dead, leaves.īaymax saves Hiro and his friends by discarding his armor and using his buoyant balloon body to float up to the surface. It ends with Gogo accidentally driving a car into the bay and sinking into the water. Narrowly saved by Baymax, Hiro and the rest drive off, in hot pursue by Yokai who attempts to kill them by throwing vehicles and using his microbots as a wave to attack them.

Hiro desperately attempts to explain the situation, but Yokai sees them and attempts to crush them. Suddenly, the rest of Tadashi's friends GoGo Tomago, Honey Lemon, Wasabi, and Fred, who Baymax had contacted earlier) drive in.

Hiro sees Yokai and ducks for cover, and sees Yokai gathering massive parts from the nearby bay with the microbots. Hiro tracks down Yokai near the warehouse. Determined not to let him escape, Hiro builds Baymax a suit and installs combat into his databases, as a chip of his design. Hiro is still devastated about the loss of his brother, and theorizes that Yokai stole his microbots, then caused the fire in Tadashi's showcase to cover his tracks. Hiro explains the matter to a local police station, but is met with disbelief by the cop he tries to explain the matter to. Hiro catches a brief glimpse at the masked man before escaping out a window. Before Hiro can investigate any further, Yokai appears and bundles the microbots into a slithering wave, and attempts to kill Hiro and Baymax. Hiro and Baymax discover what appear to be robotic arms (highly resembling Callaghan's robotic arms in the showcase) manufacturing microbots by the dozen. Tadashi runs inside to save Callaghan, but the building explodes, killing Tadashi and leaving Callaghan presumed dead.Ĭallaghan, as Yokai, is later found within a warehouse in a shadier part of San Fransokyo, where Hiro's microbots led him. After the presentation, a fire breaks out in Tadashi's showcase with Callaghan still inside. Callaghan accepts Hiro into the university.

Krei expresses interest in buying Hiro's microbots, but Callaghan intervenes with Krei's offer and states his distrust of Krei, telling Hiro not to sell his microbots (a subtle reference to his hate of Krei). Hiro's subsequent demonstration of his new microbots in order to join the university visibly impresses Callaghan, as well as Alistair Krei. It is this that motivates Hiro to join Tadashi's university and to invent the microbots. Upon introducing himself to Hiro, Callaghan speaks that Hiro's fighting robot employs his laws, and subtly reprimands him for bot-fighting as opposed to putting his intellect to use. He first appears in Tadashi's university, the Institute of Technology, with Tadashi and his younger brother Hiro.

Professor Callaghan is a renowned roboticist in San Fransokyo, credited with the creation of Callaghan's Laws of Robotics.
