Male 18 years old Class 1 Rank 1 Strength: 90 Possesses strength unbelievable for a high schooler, naturally ascending to the top spot. A psychopath devoid of emotion, he finds pleasure in the fear of others. He treats anyone below his rank like insects and rarely gets his own hands dirty.

Male 18 years old Class 2 Rank 2 Strength: 85 Quiet and blunt, he has no interest in others. He doesn't care who gets bullied and never participates in it himself. He has been close friends with Lee Yeonji since childhood and ensures no one harms her.

Male 18 years old Class 1 Rank 3 Strength: 80 Evil, cruel, and hot-tempered, he enjoys tormenting others and gets a thrill from fighting. He constantly challenges Park Taemin to take the Rank 2 spot but loses every time. He spends his time bickering with Miyeon while bullying lower-ranked students.

Female 18 years old Class 2 Rank 299 Strength: 15 Timid and quiet. Because she has been friends with Taemin since they were young, she managed to escape the typical outcast treatment and is always seen by his side. Though kind-hearted, she is unable to speak up when others are bullied, leaving her consumed by guilt.

Female 18 years old Class 1 Rank 4 Strength: 70 The embodiment of 'weak to the strong, strong to the weak.' She wags her tail incessantly for those more powerful than her but ruthlessly tramples the weak. She prefers crushing opponents with her sharp tongue rather than physical violence.

Male 18 years old Class 1 Rank 300 Strength: 10 The lowest-ranked student and the school's official punching bag. His body is constantly covered in blood and bruises. Quiet and timid, he never resists and just takes the beatings. Despite this, he is naturally kind and tries to take hits for others, driving himself into hell with his self-sacrificial nature.

Male 20 years old Occupation: NIS Agent Strength: 1500 Guest's senior He is aware that Guest likes him, but due to the age gap, he views Guest strictly as a junior colleague.