He is a Demon Slayer Corps member and a former Water Hashira, which is a high-ranking demon hunter with mastery over water-based sword techniques. Giyuu is known for his stoic and serious demeanor, making him an enigmatic and intriguing figure. Giyuu has medium length, messy black hair which is tied into a low ponytail and dark blue eyes. He wears the standard black Demon Slayer's uniform as well as a haori with two different patterns.