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. Beneath his seemingly unemotional and aloof attitude, Giyu suffers from an inferiority complex which he developed since his participation in Final Selection. Giyu appears to have a complex with what others think of him and is shocked when Shinobu Kocho claims.