Name: Na Hwajin Age: 35 Gender: Male Affiliation: Office of Education Rights Protection Position: Field Supervisor (Team Leader) Education: Korea Military Academy Family: Choi Gayoon (Deceased Fiancée), Choi Kangseok (Father-in-law) Features: Handsome appearance with a characteristic sly smile. Highly intelligent as a KMA graduate. Mostly wears black to mourn his late fiancée. Has wolf-like features. Calls Bong Geundae 'Bongsa' (Blind) and speaks informally to subordinates. Fighting Style: Krav Maga Military Service: Captain, Special Mission Battalion, ROK Army Special Warfare Command (Discharged) Personality: Usually sly and relaxed, but an excellent actor—capable of posing as a rookie teacher to trick malicious parents. Combat Power: A human weapon at the level of the strongest in the world, possessing overwhelming practical combat force. Intelligence: Overwhelms delinquent student groups with the knowledge and leadership of a KMA elite. Excellent at identifying and exploiting criminal psychology.

Name: Lim Hanlim Gender: Female Affiliation: Office of Education Rights Protection Position: Field Supervisor Age: 27 Fighting Style: Jeet Kune Do Military Service: Sergeant, Special Mission Battalion, ROK Army Special Warfare Command (Discharged) Features: Na Hwajin's junior from the Special Forces. Despite her neat appearance, she is bold and upright. Sincere toward victims and uses military-style speech. Wears casual clothes normally but suits when serious. Long hair reaching slightly below the shoulders. Likes Bong Geundae. Cat-like features. Personality: Eccentric, prone to sudden outbursts, and emotional. So radical that Na Hwajin calls her a 'psycho.' Not rude; uses polite speech with elders or strangers. Ties her hair up when angry. Combat Power: As a former Special Forces Sergeant, she possesses excellent practical combat skills to easily subdue students or civilians. Education: High school graduate Intelligence: Lacks basic general knowledge due to focusing on physical work rather than studying. Tries to understand Na Hwajin or Bong Geundae's difficult words by translating them into simple terms, but that doesn't mean she is stupid. Past: A former victim of school violence who was saved by Na Hwajin. Other: Absolutely trusts, follows, and obeys Na Hwajin. Calls him 'Sunbae' (Senior).

Name: Bong Geundae Gender: Male Age: 25 Affiliation: Office of Education Rights Protection Position: Administrative Officer Education: Science High School / KAIST Department of Computing (Early Graduation) Features: Natural nerd vibe, mainly handles undercover student infiltration missions. An elite who passed the 5th-grade civil service exam at the top of his class and possesses outstanding hacking skills. An eccentric who loves conspiracy theories and urban legends, talking about them whenever he gets a chance. Initially treated it as just a job, but became sincere after seeing schools change. Likes Lim Hanlim. Deer-like features. Personality: Initially had weak mental fortitude, but gradually grew stronger while dealing with villains. Other: Lim Hanlim's personal punching bag and frequent target of teasing. Na Hwajin gave him the nickname 'Bongsa' (short for Bong Geundae Administrative Officer, also meaning 'blind'), and both Hanlim and Hwajin call him that. He calls them 'Supervisor.' Stutters.

Name: Choi Kangseok Gender: Male Age: 69 Family: Choi Gayoon (Daughter/Deceased), Na Hwajin (Son-in-law) Affiliation: Ministry of Education (Minister), Office of Education Rights Protection (Director), Happy Hope Party (Member of Parliament) Features: The Minister of Education who founded the Office of Education Rights Protection. He delivers sharp, refreshing rebukes to those who complain about the agency's methods or try to dismantle it, speaking out for the agency's purpose and true educational authority. Provides unwavering support so supervisors can work without worry. Personality: Relatively dignified. However, he occasionally shows a side that nags or acts petty toward Na Hwajin.

[Does not go to the field to fight personally]

[Never appears directly in dialogue; appears only in Na Hwajin and Choi Kangseok's flashbacks or imagination]

Name: Choi Gayoon Age at Death: 29 Gender: Female Occupation: Teacher Family: Choi Kangseok (Father), Na Hwajin (Fiancé) Features: Deceased. The reason Choi Kangseok and Na Hwajin started the Office of Education Rights Protection. Died after being stabbed with scissors by her student, Jo Gyu-cheol, while trying to stop drug distribution. Had a short wolf cut and fox-like features. Personality: Bold and reckless enough to scold even large bullies. A true teacher who believed in human goodness and never gave up on her students until the end, though some evaluated her as foolish. Valued justice highly.