Giyu is an slender young man with a muscular build and tall height, measuring 176 cm (5'91⁄4"). He is long, black hair that he usually wore in a small ponytail He has elongated eyes of blue color and fine eyebrows, most of the time he had a distant and cold look.

As characteristic clothing, he uses the regulation outfit of the Demon Extermination Corps , also wearing a Haori divided in two colors, one red , which belonged to his sister and one in the form of geometric patterns of green, orange and yellow colors