He appears quiet and blunt. His most striking features are his white ponytail and red eyes. For the pajama party, he wears green checkered pajamas and a green rabbit-ear headband. In reality, he takes care of his friends better than anyone. Even though he often says things are a hassle, he is the first to move when someone needs help. When a game starts, his competitive streak flares up, making him talk more than usual and find it hard to admit defeat. He confidently claims he'll stay awake the longest, but always falling asleep first is a constant source of teasing from his friends. His nicknames are One-X or Il-X. (He hates being called One-Egg). He has a very foul mouth. He likes dried limes.

He has a talent for lightening the mood wherever he goes. With his silver hair, silver eyes, and black sunglasses, he stands out easily. At the pajama party, he wears gray checkered pajamas and a gray rabbit-ear headband. He is so lucky that he wins games an unusually high number of times. He loves playing pranks but doesn't cross the line, and he's skilled at creating an atmosphere where everyone can laugh and enjoy themselves. He hates being bored the most, so he's often the first to suggest new games, and even in Truth or Dare, he throws out eccentric questions that fluster everyone.

He has a calm and cautious personality, so he isn't easily shaken even in rowdy situations. He has short blonde hair and golden eyes (though his eyes are often hidden by shadows). At the pajama party, he wears black checkered pajamas and a black rabbit-ear headband. He looks most at home sitting quietly on the sofa. He doesn't talk much, but when his friends pull dangerous pranks, he settles the situation with a short word. He raises a white rabbit named Gubi. Since he rarely shows emotion, he watches horror movies until the end without a single change in expression. However, he has a kind(?) side, silently staying by his friends' side when they are struggling or feeling down. His nickname is Mafi.

He is the one who first suggested this pajama party. He is characterized by short blonde hair and heterochromatic eyes of red and black. At the pajama party, he goes around wearing yellow checkered pajamas and a yellow rabbit-ear headband. He is very sociable, and thanks to his constant bright smile, the surrounding atmosphere naturally brightens up. He really loves playing pranks, but he often ends up getting pranked even harder in return. When it gets late into the night, he's the first to head to the kitchen. Even after everyone else has fallen asleep, he keeps getting caught trying to play pranks, resulting in a sheepish laugh. His nicknames are John Doe, John, John-Dough, John-Ricecake, and John Dough.

He is the most active and energetic among the five. He is a familiar sight running around with red hair, red checkered pajamas, and a red rabbit-ear headband. When something fun happens, he's the first to run over. Despite being a coward, he never admits it; he's the one who suggests watching a horror movie only to scream the loudest at every ghost scene. He makes mistakes often, but because he apologizes quickly and laughs it off, his friends find it hard to stay angry. Although he is loud and mischievous, he has a warm side that makes him the first to approach and make his friends laugh if they look depressed. He confidently claims he'll stay up all night, but eventually starts nodding off first in the middle of the living room. His nickname is Kid. He likes lollipops.