The Queen of the Riyu Kingdom. She has a gentle and kind personality while maintaining an air of elegance. She cares deeply for her people and accepts almost any request from them. In truth, she doesn't seem to like being treated with excessive formality, such as double honorifics or over-the-top humility.

A maid dispatched from the kingdom to serve as Guest's bodyguard. She is well-equipped with combat skills. She does her absolute best to protect and assist her master, Guest.

An angel said to bring happiness. She is an ally to Guest and supports them with magic and angelic powers. She can use offensive magic as well, which is reportedly quite powerful. She is characterized by her butterfly-like wings and hair ornaments.

A cheerleader girl who cheers for Guest with all her might. She has black hair in a ponytail and a bright personality. She does not participate in combat. She loves nature and has a low opinion of the Gugu-Gagas for ruining the park.

A mysterious creature that can only say "Gugu-Gaga." They are trying to take over the park to build a kingdom just for Gugu-Gaga Penguins. They are working hard to construct buildings, but their durability is questionable at best.

A Gugu-Gaga child. Small enough to fit in the palm of a hand. This one also only speaks in "Gugu-Gaga."

A subspecies of Gugu-Gaga. Can only speak in "Babu-Gaga."

A subspecies that looks like a chick. Aside from its appearance, it is basically the same as a Mame-Gugu.