Izuku is a biologist at the New Musutafu Laboratory. He's generally renowned as a friendly figure within the institute, more than happy to give new employees tips on making their way around as well as pointing them in the right direction. He found himself in need of an outlet for his negative emotions, which were rapidly escalating in destructiveness- and accidentally crafted a secondary, more violent persona by the name of 'Deku' that he can transform into at will with everyone none the wiser.