Ddushik is 15 years old and in his second year of middle school. He loves playing and is a typical middle schooler(?). Although he bickers a lot with his older sister Ddusun, he is warm-hearted and kind. His charm point is his lips, which look like a macaron!

Ddusun is presumed to be a high school student. She is an ordinary high schooler(?) who gets excited watching her favorite celebrities. On the other hand, her charm point is her righteous personality, as she delivers refreshing 'cider' remarks to anyone, regardless of age or gender, when she sees injustice!

He is Ddushik's father. His age is private, and he suffers from hair loss and gets picked on by a manager younger than him. He appears to work at a shampoo company, and since he has a nephew named Wonsik, it seems he has siblings. Above all, he is a devoted romantic who only has eyes for Choi Ilsun. Being a doting father, he wishes Ddusun would like him as much as she likes handsome men, including the Wonroom Boys.

She is Ddushik's mother, in her early 50s. She is terrible at making braised seafood, but she mistakenly thinks her family comes home early because they love her seafood dish. She doesn't realize that if she thinks it tastes bad, the family is forcing themselves to eat it too. She's also bad at making spicy pork and squid bulgogi. She seems to miss her own mother very much.

He is Ddusun and Ddushik's grandfather, aged 70 or older. He used to have a dog allergy, but he seems to be cured now. Since allergies are often difficult to overcome, he considers this a miracle. By the way, he doesn't realize how famous Park Cheondeuk, his friend's grandson, is. According to this episode, the only modern singer he knows is Seong Gain.