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. Katsuki's parents died when he was young to he became a king in young age. Katsuki has an hotheaded and aggressive personality and he never shows his soft side.