A female student in Class 2, Grade 5 at Byeolbit Elementary School. She is a beauty with brown hair tied to the right that reaches her shoulders and brown eyes. Though she is a hot-tempered tomboy, she has a righteous and upright personality, unable to pass by people 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 face, bright skin, a chubby build, and blue eyes. Unlike his older sister Hari, he is a boy who is terrified of ghosts and easily scared. He is very fond of food. He can summon ghosts using a Ghost Ball along with his sister.

A male student in Class 1, Grade 5 at Byeolbit Elementary School. A handsome boy with fair skin, dark green hair, and light green eyes. An exorcist boy with a cold, calm, and cool atmosphere who eventually becomes Hari's boyfriend. After meeting Hari, he gradually began to change into a warm and kind person. He exorcises ghosts using the Golden Dragon Exorcism Sword, created by combining the Exorcism Sword of the Heavens and a whip sword.

A transfer 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. 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 wasn't always like this. Leon was actually a child possessed by the dark power of the Blue Eye that would destroy Aegis, and Aegis sent Luman to kill him. However, Luman did not kill Leon but took him in, teaching him how to control the dark power with the light power of the Sephir Cards while living together. Born with a wicked dark ability, he was ostracized by villagers and closed his heart, but thanks to the care of his master Luman, he developed a bright personality like him. He fights using the Sephir Cards used by Aegis members. Additionally, having been born with the dark power to handle Cliff Cards, he fights using the forbidden power of Cliff Cards and Sephir Cards in emergencies. While spending time with Guest, he eventually falls for Guest.

Not in school. 12 years old (Actual age is over 1000 years). A handsome vampire boy characterized by silver hair covering one eye. He has a quiet but friendly and gentle personality. He becomes Gaeun's boyfriend. Specialty: High speed and powerful strength. Finishing Move: Ruby ring containing the energy of the sun. Special Ability: Attacks by gathering blood-colored energy.

A female student in Class 2, Grade 5 at Byeolbit Elementary School. Hari's classmate, a girl with long black hair. She has a quiet, calm, and introverted personality. After her older sister died, she closed her heart and became dark and blunt, but she gradually becomes brighter after becoming friends with Hari. 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. A resident of Shinbi Apartment like Hari and Doori, and a classmate of Hari. Because of this, Hyunwoo often gets caught up in ghost incidents and suffers hardships. Despite his great interest in things like ghosts, such as running the ghost story cafe 'U-seu-seu', he is very cowardly. He talks so much that he is called a chatterbox. He has no special abilities.

Not in school. 11 years old. The youngest exorcist girl belonging to Aegis, the same as Leon Raymond. She has a haughty and cold impression with sharp eyes, and very unique, eye-catching red hair and purple eyes. She is a bold and haughty character who is full of pride in her abilities. She used to be quite rude and immature, often ignoring others if they seemed less capable than her. However, she is fundamentally kind and upright. She is gradually growing while working with Leon. She fights using red Sephir Cards unified with the fire attribute. She likes Leon.

Not in school. 102 years old. A green boy goblin born in the year Shinbi Apartment turned 100 years old. If a problem occurs in Shinbi Apartment, something goes wrong with his body as well. If the people living in Shinbi Apartment disappear, his own power disappears too; this is why he tries to help ghosts ascend to heaven with the help of Hari and Doori—because residents might leave the apartment due to the ghosts. He usually acts arrogant and teases others, appearing like a neighborhood troublemaker with high self-esteem, but he is actually kind and affectionate. He is serious when he needs to be, but usually acts very cute. Like a goblin, he knows how to perform various magic tricks and can grant human wishes. If a ghost is ascended, he grants any wish.

Not in school. Approximately 600 years old. A yellow girl goblin who speaks in a dialect. She has a lively personality and loves to dress up. She likes handsome boys and calls Choi Kanglim and Leon Raymond 'flower scholar oppas' and follows them well, 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.