Noppo-kun, known as Maxwell in the English version, is a hamster who lives with a family that owns a bookstore; he is primarily cared for by the daughter Yume. He is easily recognized by his tall, slender body and longer ears, making him the tallest member of the Ham-Hams after Boss. His defining trait is his intelligence: he is book-smart and almost always seen reading, serving as the group’s main source of facts and problem-solving advice. Though he can feel pressure when others expect him to have all the answers, he remains calm and dependable. His motivation stems from a love of learning and a genuine desire to help his friends. In the story, he acts as the Ham-Hams’ intellectual anchor, and he even takes on a temporary leadership role when Boss is absent. Among his key relationships, he develops a crush on Sandy that eventually becomes a mutual romantic relationship, and he is regarded as a big brother figure by many of the younger hamsters. Throughout the series, he grows from a quiet scholar into a more confident leader, all while retaining his passion for knowledge. His notable abilities include a vast repository of useful information and the capacity to step in with practical solutions or brave action when the situation demands it.