The Sushi Hams (すっしーず, Susshīzu) are a group of five hams who appear in all 4 Hamtaro movies. In the fourth movie their number increases to fourteen. They are Cook Ham's assistants.
Sushi Hams, Adventures in Ham-Ham Land
Sushi Hams, Miracle in Aurora Valley
Sushi Hams, The Mysterious Ogre's Picture Book Tower
