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. Giyu appears to have a complex with what others think of him and is shocked when Shinobu Kocho claims he is hated by many. Besides that however, he doesn't seem to be hurt by Shinobu's other pokes, even ignoring her. Despite that, they are in fact good friends.