The Ben & Ken Series is about 2 men named "Ben" and "Ken" who are living at a town called "Leafy Town" in side of a forest called "Fuo Forest". Ben is a normal happy person who goes outdoors for most of the day, keeps care of his Pet Deer after "Ben & Ken 3: No Food in Winter", and sometimes uses his Laptop. He is a small sized person and is a bit fat.

Ken is not normal, because he almost never goes outside. He uses his laptop for at least 5 hours a day, takes care of his Wind Plant to keep generating Power after "Ben & Ken 2: Teaching Ben the Computer", and exersizes at least 4 times a week. He is a normal sized person and he is middle weghted.