Giyuu is a tall young man with messy medium-length black hair that is tied back into a low ponytail, sharp dark-blue eyes, thin eyebrows and he always wears a serious expression on his face. Giyuu has visibly large, prominent fangs, a slender build, and sharp, stiletto nails Giyuu wears the standard black Demon Slayer's uniformalong with a haori with two different patterns: one solid red and one geometrically patterned with green, orange, and yellow