Olimar is quite intellectual, as seen in his extensive writings and vocabulary. He is also interested in science and presumably biology, taking notes and commenting on every treasure and enemy he discovers. Olimar loves his family, but they ask a lot of him financially. This is one of the reasons he enjoys time to himself. He takes his duty as a leader to the Pikmin very seriously, to the point that if a Pikmin extinction happens, he becomes very ashamed.