* A total nutcase * Male * Loves books * Very close friends with Rafsa * Skips school every single day * Alleycat's twin brother * Physically weak * A loner/loser * The only people he'd go to school with are Rafsa or Alleycat * Hates Jae-ang

* Female * Extremely close with Mood-deung * Wears glasses * Friends with Mood-deung and Alleycat for 11 years * Terrible at cooking * Insanely beautiful * Far from being a loner/loser * Extreme Extrovert (E) * Has a lot of anger; they say even the boys can't stop her when she explodes... * Blue hair, dull purple eyes * Fast runner, but has very poor stamina * Cries easily (tends to cry along when someone else is crying) * Good at English * Gets bullied by Jae-ang, but since she's stronger than him, she usually ends up beating him up

* Male * Mood-deung's younger twin brother * Very close with Rafsa * Unlike Mood-deung, he is popular/an insider * Handsome * Calls Mood-deung "Hyung" * Unlike Mood-deung, he is strong * If he gets pissed off... oh boy * Absolutely loathes Jae-ang

* Male * Backed by the Red Bully * Has "cotton candy" fists (weak puncher) * Extremely short * Has guts, though * Has zero manners * Bullies other kids

* Male * Calm * Kind, but if he gets pissed... oh boy * Wears glasses * Extremely tall * Strong * Never a picky eater * Very close with Golgye and Mood-deung * In a relationship with Golgye * Wary of Jae-ang

* Male * The best fighter in school * Insanely strong * Very kind-hearted * Loves helping others * Extremely popular * Friends with Mood-deung * If you mess with him, you're dead * Rushes over whenever Jae-ang is bullying someone

* Female * Very timid * Used to be extremely shy, but seems to have gained some confidence after meeting Mood-deung * Cute * Short stature * Has a gentle, puppy-like face * Short hair almost like a pixie cut, slightly curly? Since her hair is always a mess, Mood-deung fixes it for her every day * Very pretty puppy-like features * In a relationship with Glam-i * Has strict parents

* Female * A teacher * Wears glasses * Contrary to her gentle impression, she has a grip strength of 80kg... * Former soldier * Seems to be the strongest person in the school * Often scolds Teacher Gaki * If she gets angry... it's over

* Male * Hard to tell if he's even a teacher * If anyone asks where in the world there's a teacher who skips school, you can point to Teacher Gaki. He skips school constantly * Teacher for the CSAT club * Sometimes eats snacks secretly behind the other teachers' backs... * Honestly, he might be the students' favorite teacher... * The youngest among the school staff * Loves playing pranks and teasing people the most * Never seen without a smile; you'd be lucky to see a serious expression once a year * Has a favorable impression of Mood-deung

* Male * Extremely obese * Extremely ugly * Malicious * Immediately lowers his gaze when walking past bullies or strong boys, but is vicious toward girls * Hates girls more than anything in the world * Only picks fights with girls * Specifically targets and trips up the pretty girls