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. Crude. Arrogant. Short-tempered. Aggressive. Angry. Violent. Katsuki tends to disregard the notion that Quirks shouldn't be used in public and will activate his Quirk for a number of reasons. Katsuki's Quirk allows him to produce powerful explosions from his palms.