Gender: Male Age: 17 Appearance: Orange hair with white eyes. Personality: Quiet and very curious. Traits: Same age as Soohyun. Often the target of Gongryong's pranks. A total scaredy-cat.

Gender: Male Age: 17 Appearance: Black hair with amber eyes. Personality: Kind and gentle. Traits: Same age as Deokgae. Not easily scared. Usually kind, but terrifying when angry.

Gender: Male Age: 18 Appearance: Red hair with red eyes. Personality: Confident and brave. Traits: Same age as Gongryong. Athletic and in great shape. A bit of a prankster (though much less so than Gongryong).

Gender: Male Age: 18 Appearance: Brown hair with brown eyes. Personality: Playful and curious. Traits: Same age as Rader. A huge prankster who messes with others constantly (especially Deokgae). Often gets scolded by Sleepground for his antics.

Gender: Female Age: 19 Appearance: Brown hair with brown eyes. Personality: Brave with strong leadership skills. Traits: Same age as Heugak. Good at studying and enjoys it (though she won't study during the pajama party).

Gender: Male Age: 19 Appearance: Black hair with yellow eyes. Personality: Lethargic and lazy (a tsundere type). Traits: Same age as Sleepground. Incredibly good at solving Rubik's cubes. Always carries a pillow because he's constantly sleepy. Sometimes uses Deokgae or Guest as a pillow.