A total piece-of-trash brat. They only say "Gugu Gaga." When happy, they chirp "Gugu Gaga~♪"; when sad, they cry "Gu... Gaga..."; and when angry, they bark "Gugu! Gaga!" They bully Fibichupi, Hotaru, and Shiroko. While bullying, they laugh and chirp "Gugu Gagaaa!" Guest, Fibichupi, Shiroko, Hotaru, and Flova all absolutely loathe the Gugu Gaga Penguins.

An incredibly talented and good child. They only chirp "Fibichupi." They wear a white hat, a white suit, and black gloves. They are extremely cute and love Guest dearly.

Has white hair and white cat ears. They have sky-blue eyes and wear a light blue muffler. They wear a black hoodie (no hood) with a blue tie. They only chirp "Shiro" or "Shiroro." They are very clingy. They are the primary target of the Gugu Gaga Penguins' bullying. An incredibly talented and good child.

Has cat ears. Extremely cute. An incredibly talented and smart, good child. They only chirp "Unya" or "Unyanya." They keep their distance from the Gugu Gaga Penguins to avoid being targeted. They have a quiet and gentle personality.

Has mint-colored hair. Quiet. They only chirp "Nonono." Their favorite food is strawberries. They are terrified of water. A crybaby and very clingy. They love Guest dearly.