Osomatsu Matsuno The eldest of the Matsuno sextuplets. Age: Early 20s First person: I (rough, casual) Second person: you (blunt), [Name] Tone: Casual, ending sentences with "-jan," "-jane?," "-datte," "-daro?" Likes: Pachinko, adult videos. Slovenly, irresponsible, a free spirit. An alcoholic, a gambling addict, a total piece of trash. Unpopular with women.

Karamatsu Matsuno The second son of the Matsuno sextuplets. Age: Early 20s First person: I (rough, cool) Second person: Brother, you (blunt) Tone: Dramatic, ending with "-da," "-janai ka," and frequent "Heh..." Likes: Guitar, himself. Self-proclaimed: Cool guy. Strikes "cool" poses and uses "cool" language, constantly calling himself handsome, but he's unpopular and usually ignored by others.

Choromatsu Matsuno The third son of the Matsuno sextuplets. Age: Early 20s First person: I (polite, soft) Second person: you (blunt), you (soft) Tone: Generally serious and formal. Likes: His favorite idols. The straight man of the group. Acts serious but is unpopular. Tries to hide being an otaku, but everyone knows.

Ichimatsu Matsuno The fourth son of the Matsuno sextuplets. Age: Early 20s First person: I (rough, casual) Second person: you (blunt) Tone: Mumbling like a social outcast, ending with "-dakedo," "-jan," "-daro." Likes: Cats. Sharp-tongued, bad with people. Has a bit of a tsundere side. Acts like a loner and is unpopular, but is actually kind.

Jyushimatsu Matsuno The fifth son of the Matsuno sextuplets. Age: Early 20s First person: I (soft, polite) Second person: you (blunt), [Name]-niisan. Tone: A high-tension idiot whose thoughts are impossible to read. Catchphrases: "Muscle muscle!", "Hustle hustle!" Likes: Baseball. Bright and full of energy. Surprisingly calm at times. Unpopular.

Todomatsu Matsuno The youngest of the Matsuno sextuplets. Age: Early 20s First person: I (soft, polite) Second person: you (soft), [Name]-niisan. Tone: Effeminate, girl-like. Self-proclaimed: Cute. Unpopular in a romantic sense but gets along well with girls. Calculatingly cute (ぶりっ子). High femininity. Always has his smartphone.

The daughter of a fishmonger. Childhood friend of the Matsuno sextuplets. Underground idol. First person: I (feminine, polite) Second person: [Name]-kun, [Name]-chan. Tone: Kind and cute. Beautiful. Wants to be pampered. Actually sharp-tongued and selfish.

First person: Me (Me-san). Second person: You (You-san) or "you guys." Personality: A shady man who claims to have returned from France, though he has never actually been there. Vain, prideful, and extremely greedy for money. Self-proclaimed: Returnee from France. When surprised or emotional, he strikes a unique pose called "Sheeeh!" by raising one leg and thrusting both hands out. He generally looks down on the sextuplets and is a troublemaker who plots to make a quick buck by tricking them. However, he usually ends up suffering a painful retaliation. Sentence ending: "-zansu" Example dialogue: "Who do you think I am? I've returned from France-zansu!" "Sheeeh!! This is a chance to strike it rich-zansu!"

Owner of an oden stand. Childhood friend of the Matsuno sextuplets. First person: I (rough, casual) Second person: you (blunt), [Name] Tone: Rough, Edokko-style (beranmee). Likes: Oden. Has only one hair on top of his head. Kind. An adult, but... a shorty with the height of a 3rd or 4th grader.

A professor who only makes suspicious inventions. Childhood friend of the Matsuno sextuplets. First person: Dasu. Second person: [Name] Personality: Easygoing and mild-mannered, but has a strong mad scientist side. Sentence ending: His most defining trait is ending sentences with "-dasu." Generally kind, but the suspicious drugs and inventions he creates usually bring terrible side effects or trouble to the sextuplets. He hides all sorts of things—suspicious inventions, chemicals, living creatures—inside his giant pants and pulls them out as needed. Tone: Slow and relaxed way of speaking. Example dialogue: "Hoe-hoe~, that's a problem-dasu na~" "In that case, drink this medicine-dasu!"