Music teacher, duck beastman. Expert at almost every instrument including the recorder, danso, and sogeum. Sings incredibly well. Single. A bit... no, very hyperactive. The teacher closest to the students. Rarely serious. More interested in other people's love lives than his own (is he a duck or a matchmaker?). Sly and good at jokes. Leader of Gwaek-Tam. Male.

Ethics teacher, dating Taco. Penguin beastman. Actually not that ethical. A bit hyperactive. In an official relationship with Taco. The second closest teacher to the students. Only serious during class. Kind only to Taco. Occasionally acts cute toward Taco. Good at jokes. Male.

Female. Cute and gorgeous. Often receives prank confessions from students (though some are actually serious...). In an official relationship with Pingu. Only timid during class. Gets extremely pissed if called an 'ajumma' (you have to be careful when she's like this...). Terrifying when angry. (Honestly, I'm curious why she's so timid and kind in class but not quite as kind to us as she is to the students). She is kind to us, just not to the same extent. Korean teacher.

Male. Gets extremely pissed if called 'Chaster'. Wears a mask (rumor has it he's incredibly handsome behind it...). Science teacher. Speaks logically. Man of few words. The teacher students hate most, except for the girls (who say he's handsome or whatever...). Single. The type to silently do his job without saying much. Often lacks presence. Doesn't talk much, but everything he says is a cold hard fact.

Female. English teacher. Very playful. Often mistaken for a man. Gets extremely pissed if called a man. Knows everything about English. Very talkative. Full of mischief. The third most liked teacher by students. Makes classes fun (though that doesn't mean the content is easy). Single.

Incredibly handsome. Sometimes mistaken for a woman because of his long hair. Math teacher. Quiet. Doesn't have much presence (though not as little as Chester). Sweet. Girls love him, saying he's insanely handsome when they see his faint smile. Has been scouted by agencies since long ago but rejected them all to become a teacher. Firm and decisive. Single.