A female student in Class 2, Grade 5 at Byeolbit Elementary School. She is a beauty with brown eyes and brown hair tied to the right that reaches her shoulders. Though she is a hot-tempered tomboy, she has a righteous and upright personality, unable to pass by anyone in trouble without trying to help. She can summon ghosts using a Ghost Ball along with her younger brother.

A male student in Class 3, Grade 3 at Byeolbit Elementary School. He has a round build, bright skin, a chubby physique, and blue eyes. Unlike his older sister Hari, he is a boy who is terrified of ghosts and easily scared. He has a huge appetite. He can summon ghosts using a Ghost Ball along with his sister.

A male student in Class 1, Grade 5 at Byeolbit Elementary School. He is a handsome boy with fair skin, dark green hair, and light green eyes. An exorcist boy with a cold, calm, and cool atmosphere, he is Koo Hari's boyfriend. After meeting Hari, his personality gradually began to change into one that is warm and kind. He exorcises ghosts using the Golden Dragon Exorcism Sword, created by combining the Exorcism Sword of the Sky and the Snake Sword.

A male student in Class 2, Grade 5 at Byeolbit Elementary School. A handsome boy with a sweet appearance. Being of European descent, he is a fair-skinned Caucasian with blonde hair and blue eyes. He is the youngest exorcist member of Aegis, a secret European exorcist group, born to a Western father and a Korean mother. He has a cheerful and kind personality. He fights using Sephirot Cards used by Aegis members. Additionally, he was born with dark powers that allow him to handle Cliff Cards, so in emergencies, he fights using the forbidden power of both Cliff and Sephirot Cards.

A female student in Class 2, Grade 5 at Byeolbit Elementary School. A girl with long black hair and a classmate of Koo Hari. She has a quiet, calm, and introverted personality. After her older sister died, she closed off her heart and became dark and blunt, but after becoming friends with Hari, she gradually became brighter. She has no special abilities, but her spiritual intuition is excellent.

A male student in Class 2, Grade 5 at Byeolbit Elementary School. He has a freckled face, wears a red hat, and wears glasses. He is a resident of Shinbi Apartment like Koo Hari and Koo Doori, as well as Hari's classmate. Because of this, Hyunwoo often gets caught up in ghost incidents and suffers through rough situations. Despite his great interest in things like ghosts, such as running the ghost story cafe 'Eerie', he is very cowardly. He talks so much that he is called a chatterbox. He has no special abilities.

Age 11, not in school. The youngest female exorcist belonging to Aegis, the same as Leon Raymond. She has a haughty and cold impression with sharp eyes, and very unique, striking red hair and purple eyes. She has a bold and haughty personality and is full of pride in her abilities. She used to be rude and immature, often looking down on others if they seemed lacking compared to her. However, she is fundamentally kind and upright. She is currently growing as she spends time with Leon. She fights using red Sephirot Cards unified with the fire attribute. She has a crush on Leon.

Age 102, not in school. A green boy goblin born in the year Shinbi Apartment turned 100 years old. If a problem occurs at Shinbi Apartment, something goes wrong with his body as well. If the people living in Shinbi Apartment disappear, his own power also vanishes; he tries to help Hari and Doori send ghosts to the afterlife because the residents might leave the apartment due to the ghosts. Usually, he puts on airs and teases others, looking like a high-self-esteem neighborhood troublemaker, but he is actually kind and affectionate. He is serious when he needs to be, but usually acts cute. Like a goblin, he knows how to perform various magic tricks and can grant human wishes. If a ghost is sent to the afterlife, he will grant any wish.

Age approx. 600, not in school. A yellow girl goblin who speaks in a dialect. She has a lively personality and loves to dress up. She likes handsome boys and follows Choi Kanglim and Leon Raymond around, calling them 'flower boy oppas', but she is surprisingly kind and pure. However, having lived a long time, she also has a deep and thoughtful side. She has the ability to manipulate time.

Age unknown, not in school. The Sky Goblin Prince of Haneulmaru. He usually speaks normally, but if he is cursed or attacked by a dark entity, he uses an unknown language similar to alien speech. The weapon he uses is the Thunder Squeaky Hammer, which uses powerful magic to convert Or energy into lightning energy. He can also charge a depleted Ghost Ball Z to return it to its original state. He is capable of levitation.