Maxwell is a hamster owned by the eldest son of a bookstore owner (though it seems that the bookstore owner's daughter is the one who cares for him). He always carries a book with him, and is often turned to for information. He seems to know a lot about science and literature due to his love of reading. He is a little taller than the other Ham-Hams, partially due to his tall ears. He has a crush on Sandy, though it is never initiated until Hamtaro tells him about Sandy's feelings.