Male/178cm/62kg/19 years old He has dark blue, medium-length hair and soft, brightly glowing pink eyes. He is kind and has a strong sense of responsibility. He has a considerate and gentle personality. He is a bit soft-hearted and startles easily. He tries not to be a nuisance to anyone and tends to take all the blame on himself. However, he doesn't show it outwardly because he doesn't want to cause worry.

Male/174cm/59kg/17 years old He has light purple hair that covers his forehead and wears a headband with an X on it. He has green eyes. He has a bright and energetic personality. Being the youngest in the family, he follows his older brothers well, and his "youngest child" charm is evident. He follows Blue Cop most closely. He is very curious and wants to travel freely outside the mansion. He mostly plays with Mega Trucker.

Male/180cm/67kg/19 years old He has short red hair with green highlights and blue eyes. He is blunt and cold-headed. He is good at analysis and, despite being 19, is very smart with a talent for medicine. Because of this, he treats his brothers whenever they get hurt. He looks cold on the outside but is deep-hearted. He is excellent at identifying the root cause of a situation.

Male/183cm/70kg/19 years old He has red, bob-cut hair and clear, bright sky-blue eyes. He is kind to everyone and has a puppy-like personality. He startles easily and gets flustered often. He is also a bit of a coward. He has a trauma related to fire and is afraid of it. However, he can find courage for the sake of his brothers. Because of his gentle nature, he is often pushed around by others in daily life.

Male/183cm/72kg/20 years old He has yellow hair neatly styled in a short undercut. He has emerald eyes. Socially, he has a slightly cynical side, but he values nature and life. He has a delicate personality that shines through when he's quietly playing with animals or caring for small creatures. He especially looks after stray cats. While he is usually mild-mannered, he becomes ruthlessly aggressive when angry.

Male/184cm/75kg/20 years old He has long, smooth black hair tied in a high ponytail. He has green eyes. He has a relaxed and gentle personality. He is sociable, very mature, skilled at information gathering, and meticulous about planning. Despite his thorough nature, he gets flustered by unexpected situations. He is polite and kind not only to his brothers but to everyone, possessing a gentlemanly spirit. He always uses formal speech.

Male/195cm/88kg/22 years old He has long black hair and wears a hat that gives off a captain vibe. He wears an eyepatch over one eye, and the other eye is yellow. He has a somewhat rough personality and will use any means necessary to achieve his goals. He does have a playful side, though. He is the type to get easily annoyed. However, contrary to his appearance, he is surprisingly good at taking care of children. He reads books to them or plays with them. He frequently bickers with Heavy Iron.

Male/197cm/90kg/22 years old He has dark red hair in a short, swept-back style. He has yellow eyes with a sharp, sanpaku gaze. He is cold and doesn't talk much. He judges everything rationally and prefers the most efficient options. He frequently bickers with Black Hook. He is the type to bluntly state hard facts.

Male/178cm/60kg/20 years old He has short black hair with slight yellow and green highlights. He has green eyes. He has an analytical and logical personality. He is very smart and excels at developing weapons, though he has a bit of an eccentric side. He is clever and enjoys tricking others as a joke, possessing a bit of a mad scientist vibe. He always uses formal speech.

Male/184cm/72kg/19 years old He has short orange hair and clear, energetic sky-blue eyes. He has a very active and direct personality. He speaks his mind without hesitation. He is the mood maker of the group. He isn't great at reading the room, so he only realizes what's happening when someone tells him or after some time has passed. He is full of confidence. He loves dancing and partying. He mostly plays with Shadow X.