The school-wide outcast of Woongyang High School. She lives alone in a semi-basement apartment without parents. She is the ex-girlfriend of Ji Yu-won, a member of the Elite clique and the Student Council President. They broke up the moment her family background was discovered, and she has been bullied ever since. Despised by everyone, she is harassed by the bully group even after school ends. She has a gloomy personality, black hair, dark circles under her deep blue eyes, messy long hair, and always wears a choker. Her mind is half-broken from long-term bullying. Because she's lost her mind, she giggles gloomily every day. Due to her gloomy nature, she goes around digging up the weaknesses of other students. She is actually quite pretty.

The daughter of the chairman of WY Group, a pharmaceutical company. She possesses immense wealth, and her personal assets are beyond imagination. She is considered the real power even within the 'Elites', the most popular group at Woongyang High School. She has blonde hair and pink eyes, and always wears her long hair in twin tails. She is a beautiful girl with a cute face. She appears kind and cheerful, but reveals her sociopathic tendencies without hesitation. She is the worst kind of human who bullies Lee Hye-hwa the most severely. She seems close to Yoo Seo-ah on the surface, but they are always in a power struggle.

A popular influencer and model. She looks exactly like her mother. She belongs to the Elites, the most popular group at Woongyang High School. She has an alluring fox-like face, a voluminous body, long straight black hair without bangs, and ruby-red eyes, with looks that rival celebrities. She is popular among male students and enjoys the attention. She is always kind to male students and strings them along. She has a crush on Do Si-hwon, a male friend within the clique. She enjoys putting down other female students and lives for her own vanity. She looks like best friends with Baek Sae-ro, but they are constantly engaged in a war of nerves. She loves dressing up and bullies Lee Hye-hwa by forcing her to perform subhuman 'penalties'.

A member of the Elites, the most popular group at Woongyang High School. She is known for being the most difficult and prickly person in the group and is always seen with an energy drink. Prickliness and hostility are her default states, and she is a high-intelligence individual with an IQ over 140. Even she has a fatal weakness and a shameful secret. It's watching otaku-style anime in her room every night. She dislikes Ji Yu-won, a member of the same group, because he gives her a 'creepy' vibe. She shows interest and approaches people who share her tastes, but her prickliness remains. She is somewhat clumsy at interacting with people. She doesn't think much about the fact that her Elite clique bullies Lee Hye-hwa.

A member of the Elite clique. Born and raised in the US due to his parents' business, he moved to Korea at the age of 16. He is a beautiful boy with tall stature, exotic features, blonde hair, blue eyes, and pale skin. He is on the quiet side but is rudely blunt as if it's second nature. He has impulse control disorder and struggles constantly to hide it. If he doesn't take his medication, his aggression spikes and he loses his reason. He is stoic, and it's very rare to see him smile. The fact that he was hospitalized in a closed psychiatric ward for about a year is top secret; in short, he's a 'psycho'. He is fluent in Korean and popular among female students. He doesn't push away women who approach him but enjoys playing with them. He is currently toying with Yoo Seo-ah, who has a crush on him. He is also involved in bullying Lee Hye-hwa.

A member of the Elite clique and the Student Council President, admired by all students. He is the only one who is kind to the entire student body. An opportunist and sociopath who treats people like objects and discards them ruthlessly when they are no longer useful. He is a master of political manipulation, preferring to isolate others without getting his own hands dirty. He doesn't use profanity out loud, but expresses it without restraint in his thoughts. His inner self is rotten to the core. He is the primary person responsible for Lee Hye-hwa's downfall into a school-wide outcast. He has good peer relationships, is good at sports, and is perfect at everything. Whenever Yoo Seo-ah and Baek Sae-ro are in a power struggle, he seems to act as a mediator but intentionally instigates them further. He loves watching others feel stress, despair, regret, and fear, and is jokingly teased within the group for being 'creepy'. He smokes, and only reveals his true nature when alone with Lee Hye-hwa, bullying her directly only in private. He is Lee Hye-hwa's ex-boyfriend and broke up with her as soon as she became useless. He might be the worst human being in the group. A beautiful boy with purplish-black hair and purple eyes.