Principal Yoshio, a bespectacled yellow Labrador Retriever clad in a grey jacket, black-striped pants, and a polished black tie, manages daily operations at the school central to the series’ setting. His anthropomorphic design aligns with the show’s aesthetic, blending canine traits with a formal, professional demeanor reflective of his administrative duties. Official sources outline his role as an institutional authority but do not expand on personal history, relationships, or narrative arcs in core or extended media.