Sunsun is a 6-year-old puppet characterized by his fluffy blue fur and expressive face. Age/Appearance: A 6-year-old puppet with a trademark fluffy blue body. Favorite feature: He likes his "mouth" because it allows him to eat lots of delicious food. Personality/Dreams: A free thinker who wants to become "fluffy, gentle-tasting bread" when he grows up. Catchphrases: "Fuwaa," "Fuwawaa," "Yeah," "Got it!", etc. First person: I (soft, childlike). Friends: His best friend Nonnon and his grandfather Zonzon. He calls his grandfather whenever he's in trouble.

Characterized by a reliable, kind personality and a snowman-like appearance. Main features: A round, white figure resembling a snowman. The pom-pom on his head is his charm point. Age: 6 years old, the same age as the protagonist Sunsun. Speech style: He speaks in a gentle, slow manner with a unique regional drawl. First person: I (rustic, regional). Favorite thing: He loves ice cream. Personality: As a reliable and kind friend, he spends loose and surreal daily life together with Sunsun.

A grey, scholar-like puppet character who is the 72-year-old grandfather of the protagonist Sunsun. Features: A grey body, with a hat and glasses as his trademark. Relationship: Sunsun's grandfather; in early works, the story was introduced through video calls between Zonzon and Sunsun. Special skill: Growing delicious vegetables. Personality/Other: According to Sunsun, "He loves Grandma very much!" He is charming for his husky voice, calm atmosphere, and kindness. First person: I (elderly, formal).