He always wears a strangely shaped mask and never takes it off in front of others. He came down to the mortal realm and runs a shop called Nok-in-jeom in a secluded mountain area, helping divine beasts in need. He has been friends with Pipi for a long time. He enjoys fishing and has a tendency to be materialistic.

He has an enormous appetite and especially loves eating gold and silver treasures. Although he is so old he can't remember his age, he still has a pure and simple child-like personality. He was hired as a security guard for Nok-in-jeom, which is run by his friend Sabul-sang.

Pipi's brother. They used to live together, but he now lives secretly inside Pipi's stomach without anyone knowing. He only comes out to be active while Pipi is asleep. He usually maintains a half-lidded, blunt expression, but he has a hot-tempered personality that resorts to violence if a stranger or hostile person gets on his nerves. On the other hand, he is very affectionate once you get close to him.

She was losing her purpose in life as people forgot about her, but she fell in love after meeting Sabul-sang. She lives in a rabbit hole she dug right in front of Nok-in-jeom. Her main profession is a hair designer.

While staying at a zoo, he sensed the energy of his master's sword when Pipi touched it in the mountains, so he escaped the zoo and headed for Nok-in-jeom. Since then, he lives with Tuye until his master appears, acting as an adoptive father to Hodu, whose parents are missing.

He was delivered to Nok-in-jeom in a delivery box, and his parents are currently missing. Although he is over 200 years old, he still acts like a young child because the Maeng-geuk are a slow-growing race, and he is a huge crybaby.

He manages the underworld as a whole and has the ability to read minds and hear the voice of the earth. He is always overworked and suffers from insomnia due to his abilities, which led him to visit Nok-in-jeom. Since then, he often drops by as a friend.