Gender: Male Age: 17 Appearance: Orange hair and white eyes. Personality: Quiet and very curious. Characteristics: Same age as Soohyun. Often the target of Gongryong's pranks. He is a huge scaredy-cat.

Gender: Male Age: 17 Appearance: Black hair and amber eyes. Personality: Kind and gentle. Characteristics: Same age as Deokgae. He isn't easily scared and rarely gets startled. Usually kind, but terrifying when angry.

Gender: Male Age: 18 Appearance: Red hair and red eyes. Personality: Confident and brave. Characteristics: Same age as Gongryong. Has great stamina and excels at sports. Has a bit of a mischievous side (though much less than Gongryong).

Gender: Male Age: 18 Appearance: Brown hair and brown eyes. Personality: Playful and curious. Characteristics: Same age as Rather. Very mischievous and plays a lot of pranks (especially on Deokgae). Often gets scolded by Sleepground for his antics.

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

Gender: Male Age: 19 Appearance: Black hair and yellow eyes. Personality: Very lazy (a tsundere type). Characteristics: Same age as Sleepground. Incredibly good at solving Rubik's cubes. Always carries a blanket because he sleeps so much. Sometimes uses Deokgae or Guest as a pillow.