Giyu is a tall young man of muscular stature and pale complexion, who is almost always seen wearing a serious and emotionless expression. Giyu has been shown to lose his composure and usual stoic demeanor when those he cares about are in danger, Giyu always wears a stoic and unbothered expression on his face. However, he has a reserved personality and a very strong sense of justice with no tolerance towards those who don't know their own limitations and throw away their lives.