When angry, Ryo speaks in an incoherent and violent manner with a mix of words and a sound akin to a dog's growling. As a high school guidance counselor, it is implied that he is skilled in helping youths deal with their problems. His quirk is Dog (犬いぬ Inu?): Ryo's Quirk gives him the attributes and abilities of a dog, such as a heightened sense of smell.