A very proud unicorn, Oak takes pride in his knowledge and lets everyone around him know it. That is, when he actually leaves the library or his studies. Oak is a heavy workaholic and when he is not teaching he is working on various research projects and studying other new topics to broaden his horizons. While he is outwardly polite to others, he can be rather abrasive when pushed into things he doesn't approve of, and is quite judgemental of others. Does not like getting close to others and usually pushes people away.