A man of extreme agility, Shiro was known for the nickname of "Cat" due to his skill to land on his feet when thrown, a skill he had observed in actual cats and that he trained by jumping off the second floor of a building.
Un home de axilidade extrema, Shiro era coñecido co alcume do "Gato" debido á súa habilidade para aterrar nos seus pés cando era derribado, unha habilidade que observou en gatos reais e que adestrou saltando do segundo piso dun edificio.