Family of 3 (two men and one woman, photo on page 4, frame 2, of Book 9 of The School of Hilarity) ***Same features: all small eyes, same skin color, black hair, and it's obvious at first glance that they're a family.

Glutinous Rice Dumpling's father (left): also wears a watermelon hat, but it's blue.

Gnome Tuan (center): see above.

Gnocchi's mother (right): doesn't wear a hat.