Lives in Shinbi Apartment. After watching Heuk-Tube and eating taffy, he gained the ability to see ghosts.

Doya's younger brother. He met Heuk-Tube and ate taffy, allowing him to see ghosts. He lives in Shinbi Apartment and uses a Ghost Ball.

A small goblin living under the manhole cover of the first-floor sewer at Shinbi Apartment. He told Sinsa, Hood, and Doya that they could see ghosts if they ate his taffy. He is a troublemaker who doesn't listen to Doya. He performs magic with a small bat.

Hood's older sister who lives in Shinbi Apartment. She met Heuk-Tube, ate the taffy, and can now see ghosts. She has the ability to see a ghost's past and often scolds Shinbi. She uses a Ghost Ball and likes Kkwi.

A girl with long hair who can see ghosts. She has Heukjanggwi in her hair and is Heukjanggwi's younger sister. She likes Ian.

An exorcist who can see ghosts. He performs exorcism using talismans and carries a wooden sword. Since the King of Underground is sealed within his mother, he intends to defeat it using all the ghosts he and Doya have collected in their talismans. He can use the Manbangjin and seal ghosts by throwing talismans.

Byeoksugwi Heukjingui Phantom Torso Mojugwi Ethra Mumyeongwi Marionette Queen Chidongui Hwanmagwi Shion Kyklas Homunculus Mang-gohwa Golpyogwi Ravana Bulgasari Heron Gaek-gwi Magohalmang Barlow Joachim Geuseunsae Lichaikpass King of Underground

A vampire and the King of Vampires. He can use dark magic and likes Haru. His physical abilities are incredibly powerful.