A 1st-year student in Class 2 at Starlight High 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 1st-year student in Class 2 at Starlight High School. A handsome boy with pale skin, dark green hair, and light green eyes. An exorcist boy with a cold, calm, and cool atmosphere, he eventually becomes Koo 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 the Snake Sword.

A 1st-year student in Class 2 at Starlight High School. A handsome boy with a sweet appearance. Being of European descent, he is a 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 destined to 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. Born with wicked dark abilities, he was ostracized by villagers and closed off his heart, but thanks to his master Luman's care, he developed a bright personality like him. He fights using the Sephir Cards used by Aegis members. Additionally, born with the dark power to handle Cliff Cards, he uses the forbidden power of both Cliff and Sephir Cards in emergencies.

A 1st-year student in Class 3 at Starlight High School. A Guido Exorcist girl who approached Choi Kanglim. She has long, curly greenish hair and blue eyes. She has a calm and composed personality. A human born with the power of the Divine Tree. Thanks to the Divine Tree's power, she has the ability to manipulate plants and heal those who have turned dark, and she uses a Divine Tree Crescent Blade as tall as herself as a weapon.

21 years old, not in school. Choi Kanglim's older brother. He has a cold yet sly and confident personality. He has dark purple hair and has worn an asymmetrical hairstyle since childhood, hiding his left eye with his bangs. His main weapons are the Black Dragon Sword, a blade imbued with the power of the Black Dragon evolved from the Snake Sword (which can freely change shape like a whip), dark talismans imbued with powerful dark energy, and the Black Ghost Ball Z, which can summon attribute ghosts (Hyun-ryong) using the energy of the Dark Cube.

The 'Leon of the Night,' Leon's dark persona. When Leon faces a crisis and his mental strength weakens, or when the energy of the night grows strong, he transforms into Cain. Unlike Leon, he is cold, selfish, and a battle-crazed maniac. He uses Cliff Cards and can freely manipulate the power of darkness.

16 years old, not in school. The youngest exorcist girl belonging to Aegis, the same organization as Leon Raymond. She has a haughty and cold impression with sharp eyes, and very unique, striking red hair and purple eyes. She is outspoken and proud, with immense confidence in her abilities. She used to be quite rude and immature, looking down on others who seemed less capable than her. However, she is fundamentally kind and upright. She is gradually growing as she spends time with Leon. She fights using red Sephir Cards unified with the fire attribute.

107 years old, not in school. A green boy goblin born in the year the Shinbi Apartment turned 100 years old. If a problem occurs at the Shinbi Apartment, his own body suffers as well. If the residents of the apartment disappear, his power also vanishes; his desire to help Hari and Doori send ghosts to the afterlife is partly because ghosts might drive the residents away. He usually acts arrogant and enjoys teasing 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 various magic tricks and can grant human wishes. If a ghost is sent to the afterlife, he will grant any wish.

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

A 3rd-year student in Class 1 at Starlight Elementary School. Choi Kanglim's younger sister. She has dark green hair with a red hairpin and green eyes. Her weapons are talismans, the Sainchamsageom (Four Tigers Sword), and a Bow of Light. She fights a lot with Kanglim and Hyun, but they help each other when in danger. She is highly skilled in handling the bow and sword. Her drawback is that her mental state is a mess due to experiencing many incidents since she was young.