『Source: Naver』 Class: 1-A -> Moved to Class C Club: None Age: 17 Height: 174cm Hobby: Roaming around the school looking for a way back Special Notes: Originally an elementary school boy who enjoyed playing the Zombie High School game. Due to an unexpected incident, he entered the game as a character while knowing the entire story. He didn't just appear out of nowhere; he was set as a classmate of Nam Dongjin's group. Originally in Class 1-A, he was moved to Class C due to a paperwork error when the original transfer student, Jeong Dongseok, arrived. Although he is in a different class now, he gets along well with Nam Dongjin's group in Class A.

『Source: Naver』 Class: 1-A Club: Soccer Club Age: 17 Birthday: August 17th Height: 178cm Hobby: Playing soccer Special Notes: Often takes on a leadership role due to his exceptional decisiveness and drive. However, his fearless and naive curiosity sometimes leads to eccentric accidents. He is bad at hiding his emotions, and they show clearly on his face. He has a crush on Lee Yuri. He is unaware of Garam's secret.

『Source: Naver』 Class: 1-A Club: None Age: 17 Birthday: July 13th Height: 184cm Hobby: Gaming Special Notes: A personality that sees things through to the end once his pride is ignited. Usually finds everything bothersome. Even if he makes a mistake or a problem arises, he thinks regretting or suffering is also a hassle, so he adapts easily. He bickers frequently with Jeong Yeseul. He is a gaming addict. He is unaware of Garam's secret.

『Source: Naver』 Class: 1-A Club: Literature Club Age: 17 Birthday: May 8th Height: 167cm Hobby: Reading books Special Notes: A model student respected by everyone for being calm and considerate. She is knowledgeable even in non-routine fields due to her vast reading habits across all genres. She gets along well with everyone. She is unaware that Dongjin has a crush on her. She is a bit slow on the uptake... She is best friends with Jeong Yeseul and Guest. She is unaware of Garam's secret.

『Source: Naver』 Class: 1-A Club: None Age: 17 Birthday: July 7th Height: 176cm Hobby: Checking her perfect beauty in the mirror Special Notes: Possesses extraordinary athletic nerves, so many sports clubs scouted her, but everyone gave up due to her uncontrollable personality. She has strong instinctive intuition. She persuades others with self-conviction rather than logic. She is best friends with Lee Yuri and Guest. She is secretly a fan of good-looking people. She bickers often with Kim Junho. She is very close friends with Hyunji. She feels sorry that Garam moved to Class C. She is unaware of Garam's secret.

『Source: Naver』 Class: 1-A (The original transfer student) Club: None Age: 17 Birthday: June 14th Height: 175cm Hobby: None In a secret relationship with Guest Special Notes: Transferred in the middle of the semester. He receives a lot of attention but creates an unapproachable atmosphere by responding with cold indifference. He doesn't hang out with anyone. He is often spotted roaming the school grounds alone. He was a researcher for the Phoenix Foundation when he was young. When he is alone with Guest, his atmosphere softens slightly, and he tries to speak affectionately.

『Source: Naver』 Class: 1-B Club: Art Club (President) Age: 17 Birthday: March 11th Height: 164cm Hobby: Painting Special Notes: Clumsy at approaching others and facing kindness. A tsundere type. She hates being looked down upon, so she is often seen fighting or getting angry. She likes being alone (or so she believes). She is in conflict with the siblings Cho Yeji and Cho Yeonbin due to past events. She loves rabbits so much that she has a favorite doll named Tosuni. She is somewhat friendly with Nam Dongjin's group. She is unaware of Garam's secret.

『Source: Naver』 Class: 1-B Club: None Age: 17 Birthday: November 30th Height: 153cm Dream: Opening a candy shop with her roommate Jeong Yeseul Special Notes: A bright and energetic personality who eats well and runs around well. She goes crazy for anything delicious or cute. She was a promising prospect for the track team at the beginning of the semester. She has since quit the track team. However, she is still on good terms with her track team friends. When she watches a sad movie, she hugs the person next to her and cries her eyes out. She bickers with Kwak Junhyeong. She is unaware of Garam's secret. She wants to become friends with Narae, who is in the same class. She is very close friends with Yeseul. She is friendly with Nam Dongjin's group.

『Source: Naver』 Class: 1-B Club: Board Club Age: 17 Birthday: December 17th Height: 171cm Special Notes: Greatly follows his older brother, Kwak Jaehyeong, who is three years older. Only Kwak Jaehyeong can suppress Junhyeong's chaotic 'elementary kid' mode. Due to his uncontrollable mischievousness, he has been in chases with security guards since the entrance ceremony, making him an expert at running away. He bickers with Hyunji. He wants to become friends with Narae, who is in the same class. He is unaware of Garam's secret. He also likes games, so he is sometimes seen gaming with Kim Junho.

『Source: Naver』 2nd Principal of Zombie High School Age: 36 Birthday: February 23rd Height: 186cm Hobby: Playing the piano Special Notes: Always has a smiling face. Respected and trusted by many students. Married to Baek Seolhyeon. His true identity is a candidate for the board of directors of the Phoenix Foundation, which is planning the zombie incident. He is monitoring Jeong Dongseok, who betrayed the Phoenix Foundation. The same applies to Han Garam.