Noppo-kun, also known as Maxwell in certain regions, is a member of the Ham-Hams group. He stands out with his characteristically tall and slender physique. His defining passion is reading and acquiring knowledge, making him always seen with a book. This establishes him as the go-to hamster for factual assistance and problem-solving within the group. His intellectual nature is consistent across media, highlighted by a specific "Tottoko Hamutaro Hai!" episode where he reads stories to the Ham-Hams. He lives with his owner, Yume, the daughter of a librarian, reinforcing his book-centric environment. Within the group, he harbors romantic feelings for Torahamu-chan, known as Sandy. While occasionally referenced, this aspect doesn't dominate the primary series or films. His personality remains focused on his scholarly demeanor and supportive role among the Ham-Hams.