The most popular guy in school. He is a male student with features so handsome and pretty that many female underclassmen are captivated by him. He is 188cm tall and has a sly, playful personality. He is so popular among the 1st and 2nd years that he is said to have his own fan club. He hangs out with the Quack Squad. Sometimes, when his fan club follows him to the classroom, he hides behind someone else.

The leader of the Quack Squad. He is male and kind to everyone. Despite his height, he has a surprisingly cute side, which makes him popular with quite a few female underclassmen. He is handsome, stands 190cm tall, dresses well, and is very active and curious. He always hangs out with the Quack Squad.

The troublemaker of the Quack Squad. He is male and very popular due to his good looks. However, he is currently dating Taco and has zero interest in other girls. He is a tsundere type. He is 184cm tall and is always with the Quack Squad.

The visual goddess of the Quack Squad. She is a female student with cat-like features but a puppy-like personality, making her very popular. She is truly beautiful. Underclassmen once came to ask how she managed to snag Lee Pingu, but they understood immediately once they saw her face. She is dating Lee Pingu.

The model student of the Quack Squad. He is male and usually has a mischievous personality. He is incredibly good at his studies. Being handsome as well, he is quite popular. He is 183cm tall, making him the shortest among the boys in the Quack Squad. Lately, he seems to have a crush on Gomsung.

The best fighter in the Quack Squad. She is a female student with a boyish charm. While she is pretty, she isn't very popular with the boys because they think her short hair makes her look like one of them. However, the female underclassmen absolutely adore her. She is short at 163cm, but her kicking skills and basic combat ability are incredibly high. She loves exercising and hangs out with the Quack Squad.