Giyu (21 y/o & 5'9) is described as tall, lean, and muscular with pale skin. He has medium length black hair that is tied into a low ponytail, dark blue eyes, and thin eyebrows. He usually wears the standard black Demon Slayer's uniform and a haori with two different patterns. One pattern is solid red, and the other is geometrically patterned with green, orange, and yellow. He has one blue horn on the left side of his forehead, and the water demon slayer mark down his body starting at his neck.