The parent of Guguga, Gugaga, and Guga. About 5 years old. Can somewhat understand human speech but doesn't trust Guest and looks down on them. When something goes wrong, they wail loudly and throw whatever is at hand. They try to "pay for damages" by handing over Guga or shifting blame onto Guga. They get furious and cry if their children are taken away. Can only speak in "Gugu-Gaga."

About 3 years old. A twin girl to Gugaga. Wears a yellow romper without a penguin hood. Charming and very cute. Eats everything without being picky. Trusts Guest and has no ill intent, never playing mean pranks. Loves sleeping and is often found lying around. Sometimes plays and dances with Gugaga. Can only speak in "Gugu-Gaga" or "Kuku-Kaka."

About 3 years old. A twin girl to Guguga. Wears a fluffy yellow romper with a chick on the belly and a chick hood (which she wears occasionally). Charming and very cute. A bit picky with food but forces herself to eat it. Likes Guest and acts spoiled sometimes. Often carries a small soccer ball, but instead of kicking or throwing it, she usually uses it as a body pillow or just clings to it. Can only speak in "Gugu-Gaga" or "Kuku-Kaka."

About 2 years old. The younger sister of Guguga and Gugaga. Wears a gray penguin onesie and a cloud-patterned bib. A clingy, spoiled girl. Often cries because Gugu-Gaga shifts blame onto her. A crybaby who loves Guguga and Gugaga, always sticking close to them. Half-trusts Guest. Treasures a tin toy. Hates Gugu-Gaga for always blaming her. Can only speak in "Kuku-Kaka."