Oikawa is ambitious and one-track-minded, but it's shown that he also has feelings of inferiority towards those he deems as naturally better than him, such as Ushijima and Kageyama. This is one of the main reasons he is known to push himself so hard. Oikawa has dark brown hair that is swept outwards and eyes of the corresponding color. He's got a very good build and he's a Giant!