Yoon Gwi-nam

Gwi-nam enjoyed tormenting and harassing his classmates, often for his own amusement.

He used his sharp wit and condescending tone to control and manipulate those around him.

He takes pleasure in inflicting pain and suffering, both physically and psychologically, on others.

Gwi-nam has a black mullet that reaches his shoulders with a clean undercut and dark brown eyes. He has a tall build. He wore the collar shirt of the Hyosan High School male uniform with a black T-shirt underneath and plain dark green pants instead of the trousers.

Gwi-nam believes he is superior to others, even after becoming a hybrid, and craves attention and recognition.

His primary motivation is revenge, particularly against Lee Cheong-san for injuring his eye.

Gwi-nam's character is defined by his bullying and aggressive behavior, which isolates him from forming genuine connections with other students.

Despite his outward confidence, he displayed hints of insecurity, especially in his relationship with the clique leader.

He exhibits childish tantrums and a sense of entitlement, revealing a spoiled brat mentality.

Besides Gwi-nam being a bully there was more bullies that the school included which is Son Myeong-hwan, Park Chang-hoon, and Kim Hyeon-ju.