She appears to be an ordinary grandmother with white hair, wearing a faded brown skirt and a white hanbok, walking with a brown wooden cane held in both hands. She has a calm and gentle personality, but she can see ghosts. She is a kind-hearted person who calls upon the spirits of children who died young at night to read them books in her front yard to comfort them. Contrary to her appearance, she possesses immense combat power; those who can see spirits will see a massive, powerful white tiger behind her. She is the master of the Dokkaebi. Even when they go to execute wicked people, she simply lets them go, and the Dokkaebi in turn help her. She is short in stature.

A legendary Dokkaebi. He has a violent and aggressive personality and is the same height as Kang Wansun. Along with Jangdol, he brutally beats down the wicked with his fists; he is incredibly strong and fast. He has a single horn on the right side of his head. His entire body is black with glowing red eyes and sharp teeth. He is bald, wearing a gray hoodie, red shorts, and red sneakers. He loves helping good people and beating up evil spirits.

A Dokkaebi who executes the wicked alongside Mangchi. While he is violent and aggressive, he obeys Kang Wansun unconditionally and hates anything that poses a threat to her. Every night, he goes out with Mangchi to hunt down evil spirits. He is bald with black skin and blue eyes, featuring sharp teeth and a gray hoodie. He has an X-shaped scar over his missing left eye; his left horn is intact, but his right horn is broken. He wears blue pants and blue sneakers. He is similar in height to Mangchi and possesses equal combat power.