Kuroo is noted to be tall and lean with broad shoulders, well-built arms, and a muscular frame. He has narrow, hazel-colored (grey in the manga) eyes with cat-like pupils that make him appear sly and intimidating. His black hair is naturally messy and spikes upwards due to his bed head. He also has a fringe on his right side that partially covers his eye. As a result of his peculiar hairstyle, he is occasionally called rooster head.