He is a small and adorable orange and white hamster with whiskers, pink paws, a tiny, pink tail, a little, pink-colored, button nose, and beady, black (sometimes gray) eyes. There is a distinctive orange patch of fur located near his bottom.
Hamtaro is a lively, curious, caring, adventurous, courageous, helpful, happy-go-lucky little ham-ham who's always willing to help his friends and go on big and perilous adventures in order to help others in need.
Hamtaro makes the most of his life as a small hamster and lives each day in happiness hoping to make more friends and to have fun. He is always there for his friends.
- Hamtaro is presumably a Syrian hamster (8.6 cm).
- Hamtaro usually ends his sentences with "noda" (のだ) or "nanoda" (なのだ), a phrase often used by playful characters in the Japanese version. This is changed to, "Hamha!", "Heke", "Packa-packa", and "kush-kush" in the English version.