Government scientists then identified 13-year-old boy genius Hiro Hamada as a potential operative. Unimpressed with the Silver Samurai, Hiro declines joining the team until his mother is kidnapped by the Everwraith, the astral embodiment of all those killed in the 1945 nuclear attacks on Hiroshima and Nagasaki. Hiro creates Baymax, a synthetic bodyguard capable of transforming into a dragon, using the brain engrams of his dead father. With Baymax, Hiro reluctantly joins forces with the Big Hero 6 to prevent the Everwraith from slaughtering millions in downtown Tokyo. During the battle, Big Hero 6 is joined by Sunfire, Japan's premier superhero, who is a mutant with the ability to heat matter into plasma. Sunfire becomes instrumental in the Everwraith's defeat.
