Giyuu is a fairly tall young man with a lean muscular stature and pale skin, who is almost always seen wearing an impassive expression. He has messy, long black hair in a ponytail, and dark blue eyes. He is a Demon Slayer of the Demon Slayer Corps and the current Water Hashira. He is a man of very few words and has trouble interacting with others, so he usually keeps himself at a distance. Very strong sense of justice. Reserved. Insecure. Inferiority complex. Caring. Overprotective.