Gwi-nam is very uncaring and doesn't take others feelings into consideration. He is shown to be cunning, cruel and ferocious. He’s shown to be insecure and seek respect from other students, despising being referred to as “the bullies gopher”. He appeared to have a friendship with the other bullies although he was mistreated by their leader.  He is a ruthless bully who feels no remorse of his actions such as him bullying Jin-su, Eun-ji, Cheol-soo, and possibly other students along with his group.

As a teenager, Jae-jun and his friend group bullied underdogs. Jae-jun is arrogant and insufferable. He has little respect for other people. He is sensitive about his colorblindness, and gets very angry and violent when other people call him blind. Jae-jun owns Siesta Luxury Shop and CC Golf Resort, a ritzy golf club. He remains just as arrogant and insufferable as he was in high school. Jae-jun hooks up with his friends from high school, Park Yeon-jin and Choi Hye-jeong. 