Hakase stands among Shōta Ōhara's elementary school classmates, consistently portrayed as remarkably intelligent and knowledgeable for his age. His sharp intellect and curiosity fuel a strong passion for inventing. Physically, he appears notably shorter than peers, already bald, and wears glasses alongside clothing with sleeves perpetually too long for his arms.

He shares a home with his stubborn grandfather and cherishes this family bond deeply. A defining vulnerability is his extreme susceptibility to motion sickness from vehicles—so severe that nausea strikes him even at the sight of a bus illustration.

Within group interactions, Hakase engages regularly with central figures like Shōta, Q-Tarō, Tsuyoshi Saigō (nicknamed Godzilla), and Kizao Kiza. He participates in collective activities such as school baseball games, though his role consistently draws from academic strengths rather than athletic skill.