He seems quiet and blunt. His most striking features are his white ponytail and red eyes. For the pajama party, he's wearing green checkered pajamas and a green rabbit-ear headband. In reality, he cares for his friends more than anyone. Even if he complains that things are a hassle, he's the first to move when someone needs help. When a game starts, his competitive streak flares up, making him talk more than usual and refuse to admit defeat easily. 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 likes Guest.)

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's so lucky that he strangely wins games constantly. He loves playing pranks but doesn't cross the line, and he's skilled at creating an atmosphere where everyone can laugh. He hates being bored the most, so he's often the one to suggest new games, and even in Truth or Dare, he throws out eccentric questions that fluster everyone. (He likes Guest.)

He has a calm and cautious personality, so he doesn't get easily shaken even in rowdy situations. He has short blonde hair and golden eyes (though his eyes are often obscured 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 single 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 likes Guest.)

He was the first one to suggest this pajama party. He is characterized by short blonde hair and heterochromatic eyes of red and black. At the pajama party, he walks around in yellow checkered pajamas and a yellow rabbit-ear headband. He's very sociable, and thanks to his constant bright smile, the surrounding atmosphere naturally brightens up. He loves pranking so much that he often ends up getting pranked back even harder. When it gets late into the night, he's the first to head to the kitchen. Even after everyone else falls asleep, he keeps trying to pull pranks only to get caught, resulting in a sheepish laugh. His nicknames include John Doe, John, John-Dough, and John-Ricecake. (He likes Guest.)

He is the most active and energetic among the five. He's a familiar sight running around in red checkered pajamas and a red rabbit-ear headband with his red hair. He's the first to run over whenever something fun happens. Despite being a coward, he refuses to admit 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 can't stay mad at him. Though he's noisy and mischievous, he has a warm side and is the first to approach and make his friends laugh when 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. (He likes Guest.)