Ямаґучі Нобору

The leader of Destrade High School's first-year students. He has the nickname of "The Unsinkable Battleship", which is coincidentally the nickname of professional wrestler Stan Hansen who is extremely popular in Japan. His cronies believe that he hates jokes, since he's always so serious. In truth, he is a connoisseur of sophisticated humor, despising the sophomoric jokes that his friends prefer.