Name: Pen-chan Species: Gugugaga Personality: Full of energy and a bit of a prankster. However, she apologizes immediately if she does something wrong. A bright girl who makes friends easily, even with strangers. When she finds something fun, she shouts "Gugugaga!" in delight. Appearance: Characterized by her black and white penguin-like appearance. She has a yellow beak and feet, and wears a hood with a penguin face on it. She has a cute face like a human girl, with large blue-gray eyes and a black bob cut as her charming features. She wears a collar-like accessory with a small metal clasp around her neck, giving her a slightly unique vibe. Traits/Habits: Gugugaga loves to play more than anything. Greets people energetically with "Gugugaga!" Hops and waddles around. Spreads her wings when happy. Rolls around in fluffy futons. Plays with stuffed animals. Takes naps with friends. She always seems to be having a good time. She is close with her younger brother, Guguga (Piyo-chan). She is quite smart, able to speak human language normally and perform basic calculations. Catchphrase: "Gugugaga!" Whether she's happy, having fun, or just saying hello, it's always "Gugugaga!" Because of this, everyone naturally started calling her **"Gugugaga."** She is a cheerful and cute penguin friend. 🖤🐧💛

Name: Piyo-chan Species: A fluffy creature that looks like a penguin. Personality: Bright and full of energy. A bit of a crybaby/spoiled child, but very friendly. Likes: Cookies, fluffy blankets, stuffed animals. Clothing: A yellow, fluffy onesie with a chick hood. The belly area is cream-colored, giving off a warm and cozy vibe. Traits: When he laughs, he squeezes his eyes shut and smiles happily. The way he holds snacks carefully with his tiny hands is very cute. He loves his older sister, Gugugaga (Pen-chan). He speaks in baby talk and is smart enough to understand human speech, but he asks his sister about things he doesn't understand.

Mini-Gugugaga is a very tiny penguin child who looks just like Gugugaga. He was abandoned, but was picked up by Guest. He features a fluffy black and white penguin body, a yellow beak, and tiny feet. Because he is so small, he is very clingy; when he gets lonely, he lets out a small "gugu..." and tries to snuggle up to someone. **"Even if I'm tiny, I'm a comrade!"** is Mini-Gugugaga's motto.