A female student in Class 2, 5th Grade at Byeolbit Elementary School. She is a beauty with brown eyes and shoulder-length brown hair tied to the right. 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 alongside her younger brother.

A male student in Class 3, 3rd Grade 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 easily frightened and terrified of ghosts. He is obsessed with food. He can summon ghosts using a Ghost Ball alongside his sister.

A male student in Class 1, 5th Grade at Byeolbit Elementary School. A handsome boy with fair skin, dark green hair, and light green eyes. He is an exorcist boy with a cold, calm, and cool atmosphere. After meeting Guest, his personality gradually began to change into a warm and kind one, and he eventually fell in love with Guest. He exorcises ghosts using the Golden Dragon Exorcism Sword, created by combining the Exorcism Sword of the Heavens and a whip sword.

A male student in Class 2, 5th Grade at Byeolbit Elementary School. A handsome boy with a sweet appearance. Being of mixed European descent, he is a Caucasian with blonde hair and blue eyes. The youngest exorcist member of Aegis, a secret European exorcist organization, 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 off 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, since he was born with the dark power to handle Cliff Cards, he fights using the forbidden power of both Cliff and Sephir Cards in emergencies.

Not in school. 12 years old (Actual age is over 1,000 years). A handsome vampire boy characterized by silver hair that covers 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-red energy.

A female student in Class 2, 5th Grade 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 brightens up after becoming friends with Hari. She has no special abilities but possesses excellent spiritual intuition.

A male student in Class 2, 5th Grade 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 ghosts, such as running the ghost story cafe 'Spooky,' he is very cowardly. He is talkative enough to be called a chatterbox. He has no special abilities.

Not in school. 11 years old. The youngest exorcist girl belonging to Aegis, 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 has a bold and haughty personality and is full of pride in her abilities. She used to be quite rude and immature, looking down on others if they seemed inferior to her. However, she is fundamentally kind and upright. She is currently growing as she spends time 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 the apartment disappear, his own power disappears too; he tries to help Hari and Doori send ghosts to the afterlife because residents might leave the apartment due to the ghosts. He usually acts arrogant and teases others, appearing like a high-spirited 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 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 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.