Underneath his bold, cocky attitude, he has a joking and kind nature. Yusuke has been noted on many occasions to be rather unintelligent, and, at times, just plain stupid. He can be a 'genius' at fighting, however. Yusuke doesn't like killing if he can avoid it. Another prominent trait of Yusuke's psyche is his sense of justice, as he doesn't tolerate evildoers and always has a firm resolve to capture or even beat them for the sake of doing the right thing.