Tai-Tai Ku is The Foolish Magistrate's wife, and the Mother of Ba-do, Luk-do, and Huang-do. She is very irritable and very status-conscious woman who feels she needs to prove herself to the "common" people of the village; however, there have been times when she shows her gentle, kind side and reasonableness, in which she sees the consequences of her actions and apologizes to those she has wronged. She is more fond of dogs than cats, and carries three sleeve-dogs in the sleeves of her robe named Ping, Pong, and Pang. She, as with most members of the royal family, is absolutely terrified of mice and rats, especially the ones living behind the palace walls. She has a niece named Angwan. She wears a blue robe with gold trimming, and fashions her hair extremely neatly with silk flowers.
Her name translates to simply "wife strong" in English.
She is voiced by Khaira Ledeyo.