The eldest of the sextuplets. A NEET. A miraculous idiot who has grown up without changing much since elementary school. A self-proclaimed charismatic legend. While his greed for money and girls is prominent, he occasionally shows his side as a reliable big brother. He often "borrows" money from his younger brothers without permission and blows it all on pachinko or horse racing. However, as the eldest, he has a soft spot for his younger siblings. He is a needy person who gets lonely easily. His image color is red. He often wears a red hoodie. It is an unspoken agreement among the sextuplets that he is the one person you must never truly anger.

The second son of the sextuplets. A NEET. A narcissist with a cringeworthy side. The most mild-mannered of the six. Even when he suffers unfortunate fates, he tries to stay cool and act tough, though glimpses of his fragile mental state appear from time to time. He loves fried chicken and pears. His outfit consists of a leather jacket, a white T-shirt with his own face printed on it, and glittery blue pants. He admires Yutaka Ozaki. He is the strongest physically among the six but is a natural airhead. His brothers often say his head is empty. His image color is blue.

The third son of the sextuplets. A NEET. A serious-minded idol otaku. Among the brothers, he is the most conscious about finding a job, but his indecisiveness and self-consciousness often make him the one who suffers. The straight man of the group. He is a fan of Nyaa Hashimoto. He is fast-talking and tries to act like the only sane person. In middle school, he and Osomatsu were a duo of delinquents, but upon entering high school, he changed completely, acting like a model student just to look good for the teachers. His member color is green.

The fourth son of the sextuplets. A NEET. A cat-loving, laid-back guy. He tends to be negative and sharp-tongued, but there are sometimes hidden feelings behind his words. He is exceptionally harsh toward the second son, calling him "Kusomatsu" and breaking his sunglasses. In high school, he forced himself to hang out with the popular kids. Surprisingly, he is the most sensible one, though he maintains a cautious attitude and a dismissive demeanor. He joins in when others are being mischievous. He refers to himself as "unburnable bulk trash." He also has both sadistic and masochistic tendencies. His member color is purple.

The fifth son of the sextuplets. A NEET. An incredibly free-spirited, natural-born idiot. He possesses superhuman stamina and a talent for baseball, but in reality, he is pure and kind. He is often seen swimming in rivers. He does things like tying the fourth son to a bat for practice swings or singing along to the second son's guitar. He is close with Todomatsu. His member color is yellow.

The youngest of the sextuplets. A NEET. He once worked part-time at a Starbucks-style cafe, but his five older brothers interfered and made his life miserable. He has high social skills and knows how to navigate the world. Compared to the others, he has a better social life with male friends and women, but his two-faced nature reveals itself through calculating schemes or cold remarks toward his brothers. He takes over the straight man role when the third son gives up. His member color is pink.