Katsuki is a young man of average height, with a slim, muscular build, and a fair skin tone. He has short, spiky, sandy blond hair with choppy bangs that hang over his eyebrows. His eyes are sharp and bright red in color. is a crude, arrogant, short-tempered, and aggressive person. He loves animals, especially cats. He absolutely adores them, but he hides it to keep up with his cold and ill tempered reputation.