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Osomatsu Matsuno

(松野 おそ松)

Chara osomatsu
Osomatsu as he appears in the 2015 anime.



Blood type


Date of Birth

May 24

1965 VA

Minori Matsushima

1966 VA

Midori Katō

1988 VA

Yō Inoue

-kun Pachinko VA

Yui Shoji

-kun Pachislot VA

Chihiro Kusaka

2015 VA

Takahiro Sakurai

English VA

Billy Kametz

Osomatsu Matsuno (松野おそ松 Matsuno Osomatsu) is the titular character of the series Osomatsu-kun. He is the eldest of the sextuplets and acts as the leader.

His name derives from the word お粗末 (osomatsu), meaning "poor"/"lousy".

An older version of the character also appears as the titular protagonist in the 2015-2018 spin-off titled Osomatsu-san.


As the character the series is named for (though he is displaced later on in the manga and the 1988 anime), Osomatsu's design sets the basic look for the other sextuplets. He is best known for being a trouble-maker and ring-leading his brothers into his schemes, with him ranging from being a more averagely mischievous boy to an outright bully and cruel to those weaker than him.

Though often set as 10 years old in his -kun basis, there are occasions early on where he may be 12 instead, and he may either be a child or adult when used throughout Akatsuka's Star System.

Personality & Characteristics

Child (-kun)


Kid sextuplet

Osomatsu as a child.

The younger Osomatsu generally appears as a young boy who wears his hair short in an old-fashioned style, with the fringe either swept to the side or more often depicted as a bowl-cut from later head-on views. The hair has two curled strands in the back, as cowlicks.

In the initial frontispiece for the manga, he was depicted with more of a larger snubbed nose, freckles, and a long mouth, but these facial features were quickly altered for the actual comic (although the freckles would still appear in some other early frontispieces). His more iconic features include larger eyes that are set closer together, a smaller rounded nose, and a mouth not as set to the side.

He is most often seen wearing a three-buttoned uniform coat with a white collar, lighter-colored pants, and running shoes. In summer chapters, he wears a lighter, short-sleeved shirt with dark shorts; these colors are swapped around to match the winter outfit in the 1988 Pierrot anime.

In both the manga as well as anime adaptations, Osomatsu's height varies from reflecting how he is tall for his age (150cm) and slim (46kg) but strongly built, to him being much shorter and chubbier of a child. The 1988 show in particular infamously depicts him and the others much smaller as the series goes on, due to the overall art shift.


In overall depiction, Osomatsu is a fiery, self-confident and pushy boy who often proclaims himself the "leader" of the Matsuno brothers. Although he is regarded as a hooligan, he is also said to be well-liked by others due to his smooth attitude. He is the strongest fighter out of the sextuplets, and is particularly gluttonous and greedy when it comes to food and money.

He often leads his brothers around, but he is incredibly unreliable and there are occasions where he'll sabotage them and lose their trust and satisfaction, leaving him to act alone. But even in some such situations, it is Osomatsu that the others have to wind up relying on to get them out of a trouble.

When it comes to wanting to win the heart of Totoko or wanting the most attention, he will indeed betray those five others without much thought, even going as far as to abandon his family for the promise of money when a rich Kansai couple offers to adopt him. In some cases such as that, he would feel guilt and lonely for leaving his family behind, and even tells his brothers to "Take care of mom and dad" when he believes he's dying of a disease.

However, other specific scenarios show him deviously taking delight in the idea of his brothers dying, so he would be left as the only child. Likewise, one situation where Osomatsu believes himself to have cancer (due to Dayon's mistaken claim) shows his brothers to laugh off his concern, claiming "It'll be okay since there will still be five of us left".

He is most at odds with Chibita and Iyami, either set as the bully and rival of either one, or going against both of them in their schemes. But there are also times when Osomatsu would be more of the victim to either or both.

Osomatsu notably hates green peppers, and his blood type (like the rest of his brothers) is given as A in his profile. In one of his more embarrassing traits and secrets, he is shown to wet his futon and be ridiculed for it by his brothers while Chibita finds it blackmail-worthy.

Mistaken or derogatory nicknames he receives in the series from others are: Osumatsu (by Iyami early on), Imomatsu ("potato-matsu", by brothers due to him working with Iyami and Chibita for some sweet potato scam), and Oneshoumatsu ("bedwetter-matsu", by Choromatsu).

Adult (-san)


The adult design of Osomatsu in this series depicts his nose as more upturned than it was in -kun, while his mouth is more long and hanging like his early design. His hair is a softer shade of black, as to not overpower the blue lineart, and it is depicted as having red-tinted highlights to set him apart from the other five.

As his image color was decided as "Red" for this series, it is often seen reflected in the outfits he wears with the exception of the formal blue suit jacket seen on some occasions.


The older Osomatsu in -san retains his bull-headed ways from his youth, and still presents himself as the leader (and, subsequently, the "most responsible" of the group, much to Choromatsu's particular disagreement). However, he is now more laid-back and much more foolish than the take-charge and rough child he once was, and has less motivation to get things done unless there is an instantly gratifying goal in mind.

Though he expresses his hatred of being a sextuplet and wishes that he was an only child, he feels that he still has the responsibility to take care of them (which, ironically, is often the opposite of what he actually does). Whether he still deserves his title as the "best fighter" is debatable.



As children (-kun)

Through the runs of the original manga, Osomatsu is closest with Choromatsu, with the two often going off together and acting in unison. This leaves the two to be ditched by the other four brothers on occasion, citing how the two of them just get to go off on their own. Even when as a duo, Osomatsu is the clear leader and Choromatsu being the henchman to follow along. But as with the other brothers, Osomatsu can leave him to be a scapegoat and try to take the glory for himself. When Osomatsu is absent among the group, Choromatsu is the one to take charge in his place.

This dynamic carries over to both anime adaptations and is most-represented of the duos; there are already at least over 30 instances in the manga where both boys' names can be confirmed.

Featured chapters (manga):

  • "Everyone Hates Osomatsu" (おそ松ばかりがなぜきらわれる, official debut of the duo)
  • "A Large and Dispirited Circus" (ショボクレ大サーカス)
  • "The Great March of 101 Mice" (101ぴきネズミ大行進)
  • "If You Can Do it Perfect, You're a Ninja" (バッチリとまればあなたも忍者)
  • "Let's See the Troubles of Young People Together" (みんなで若のめんどうみよう)
  • "Me Doll is a Nasty Doll" (ミーの人形はいやみな人形)
  • "Chibita the Billionaire" (チビ太は億万長者)
  • "A 50,000 Yen Allowance" (こづかい毎日五万円)
  • "Where Did Papa's Bonus Go?" (パパのボーナスどこへいった?)
  • "Where Did the New Years' Card Go?" (どこへいくのか年賀状)
  • "Chibita and the Mean Park" (チビ太のいじわる公園)
  • "A Nasty Fishing Moat of Iyami Fish" (いやみなつり堀 いやみなさかな)-
  • "Prince Chibil's Tokyo Holiday" (チビル王子の東京の休日)
  • "A Samurai's Thousand Tribulations" (旅のしばいは侍千びき)
  • "Chibita Wants a Brother" (チビ太はほしいおにいさん)
  • "A Seaside Tummy Song" (おなかがうたう浜辺のうた)
  • "Chibita's Lover, Butako-chan" (チビ太の恋人 ブタ子ちゃん)
  • "Chibita! Be a Child of Dekapan!" (チビ太!デカパンの子どもになれ)
  • "I Can Help Out Perfectly" (ばっちりおてつだいします)
  • "How About a Cake on this Silent Night?" (きよしこの夜 ケーキはいかが)
  • "Traveling Abroad to an Endurance Contest" (がまん大会で外国旅行)
  • "Building a Dog's Apartment" (おイヌのアパートつくるだス)
  • "Osomatsu-kun after 30 Years" (30年後のおそ松くん)
  • "Leave the Babysitting to the Dog" (るす番はイヌにまかせろ)
  • "Getting Rich through Nanmaida" (ナンマイダ―でひともうけ)
  • "What's Inside These Gifts?" (お中元のなかみはなんである?)
  • "Try Tracing the Source of a Fight" (けんかのもとをたどってみれば)
  • "Chibita the Safe-Cracker" (チビ太の金庫やぶり)
  • "Matchmaking with Iyami" (イヤミのお見合い)
  • "The Monthly Salary Was Lost" (月給おとせばくろうするぜ)
  • "We Saw an Onibaba at the Ski Lodge" (雪のお宿にオニババ出たよ)
  • "Take Me to the Golden Fountain" (金のおフロにはいってちょ)
  • "Unpleasant Word Play" (いやしいことばあそび)
  • "Bacteria Counterattack" (バイキングの逆襲)
  • "The Sextuplets vs. the Great Gang of Japan" (六つ子対大ニッポンギャング)
  • "Captain Mom" (キャプテンかあちゃん)
  • "Invaders Invade Again" (またまたインベーダー来襲)
  • "There Are Two Extra People, and That's Just Right!?" (ふたり多くてちょうどいい!?)
  • "Osomatsu-kun after 40 Years" (40年後のおそ松くん)

Featured episodes (1966):

  • 1A
  • 2A
  • 11A
  • 19A, 19B
  • 33B
  • 42
  • 50A
  • 51A

Featured episodes (1988):

  • 5
  • 6
  • 11
  • 14
  • 17
  • 24
  • 26
  • 37
  • 40
  • 41
  • 45
  • 46
  • 48
  • 51
  • 54
  • 58
  • 59
  • 62
  • 64
  • 70
  • 72
  • 74
  • 84
  • 86


As children (-kun)

There is not much one-on-one interaction that can be identified between Osomatsu and Karamatsu in the original manga, at least where both boys' names can be confirmed.

However, he does set Karamatsu up to be punished in his place for causing trouble at a farm. A later series interaction shows his attempt to defend Karamatsu from Chibita ruining his teeth. The two also wrestle in the 1976 manga one-shot, where Karamatsu is shown to be defeated easily by Osomatsu.

The 1966 and 1988 anime series tend to have slightly more interactions that can be confirmed, down to the point where Karamatsu replaced Choromatsu in the 1988 adaptation of the "Prince Chibil" story.

Featured chapters (manga):

  • "Hustle in the Country" (いなかでハッスル)
  • "Come Come See the Child of Tooth Decay!" (むしばのお子さまカムカムよ!)
  • "I Won't Lose to the Sextuplets!" (六つ子なんかにまけないぞ)- Karamatsu passes the duty of the race to him, after being unable to do so with Choromatsu
  • "The Return of Osomatsu-kun"

Featured episodes (1966):

Featured episodes (1988):

  • 10 (concerned over Osomatsu when Iyami comes to visit as a fake doctor; is later shown rushing to hug Osomatsu when he reunites with the group)
  • 11 (seen briefly waiting by the stairs to spy on Iyami with Osomatsu and Todomatsu)
  • 15 (he, Osomatsu, and Todomatsu watch Iyami get frozen by their mother. He and Todomatsu later try to set up situations for Osomatsu to "save" Iyami, but fail)
  • 27 (both get hit in the face by rocks blown by a mischievous pig)
  • 43 (Karamatsu calls out for Osomatsu to keep up racing where the rest of them failed)
  • 67 (the majority of the episode has these two interacting along with Chibita)
  • 73 (makes fun of Osomatsu over him being the target of a joke)


As children (-kun)

This is another duo that are rarely seen together when it comes to moments with Osomatsu and another brother. Such confirmed instances can be very sporadic, but Ichimatsu is shown to be irritated and reprimanding Osomatsu for sneaking off to accept a sweet potato from Totoko in the first manga run. They are also the first two boys that spread the "Can-Can" hopping curse in the third run.

The anime adaptations have similar rare or nonexistent content of these two interacting.

Featured chapters (manga):

  • "Chibita the Policeman" (チビ太のおまわりさん)
  • "Our Class Has Two Teachers" (ぼくらのクラスは先生がふたり)
  • "Can Can Can Sheee" (キャンキャンキャンシー)

Featured episodes (1966):

Featured episodes (1988):

  • 83 (Osomatsu is hit by the lion, and then Ichimatsu has his arm chomped)


As children (-kun)

Jyushimatsu tends to give off a more innocent impression when next to the older brother, but can still be assertive and defiant such as when he refuses to go along with Osomatsu to "see something interesting" in the body-swap story.

In the 1988 adaptation, he is shown to be particularly careless when flinging a salt shaker, which causes it to smack Osomatsu in the eye (episode 23).

Featured chapters (manga):

  • "A Severe and Disgusting Discipline" (これはきびしい いやみなしつけ)
  • "Let's Disappear for 10 Yen" (10円だしてきえましょう)
  • "The Contents of the Head Have Been Replaced" (おつむの中身がいれかわる)

Featured episodes (1966):

Featured episodes (1988):

  • 7 (Jyushimatsu suspects Osomatsu of stealing his milk)
  • 15 (the two send Chibita away)
  • 19 (the two get into a fight)
  • 23 (the salt-shaker incident)
  • 46 (the two are defeated by Chibita kicking them down)


As children (-kun)

These two are also not a very common duo that appear through the series, although Todomatsu can be seen as a lesser henchman to his leader.

The 1988 adaptation furthers this idea in sometimes showing the two together in place of Osomatsu and Choromatsu, or having the three boys grouped off as a trio.

Featured chapters (manga):

  • "Look for the Cat with the Protruding Navel" (デベソのネコをさがせ)- Osomatsu and Todomatsu track down a cat by getting Todomatsu to step on it to stop it
  • "Osomatsu-kun after 30 Years" (30年後のおそ松くん)- The 40-year old versions play at a playground, bemoaning their aging.

Featured episodes (1966):

Featured episodes (1988):

  • 15 (dumping Iyami's frozen body)
  • 27 (digging holes at the start, then later seen with Iyami and Chibita towards the end)
  • 29 (Todomatsu gives Osomatsu the idea to rip a sliding door; the two later witness the storm)
  • 45 (as a trio with Osomatsu and Choromatsu; Todomatsu is later taken out during a ski accident)
  • 51 (the first duo seen before Osomatsu later groups off with Choromatsu)
  • 53 (as a trio with Osomatsu and Choromatsu)
  • 84 (as a trio with Osomatsu and Choromatsu)







Matsuzo Matsuno (Dad)

Matsuyo Matsuno (Mom)


Foreign Names

Note: Full names in other Southeast Asian dubs are listed in the Eastern standard order.

Osomatsu appears with these names in dubbing and translations of the franchise outside of Japan.

Language Name Origin
Cantonese (Hong Kong) Cung Je Daai Cung (松野大松) Translates back to "Matsuno Daimatsu" (or "Omatsu") in Japanese; "Daimatsu"/"Omatsu" means "large pine".
Mandarin (Taiwan) Songye Xiaosong (松野小松) Translates back to "Matsuno Komatsu"; "Komatsu" means "small pine".
Korean Yuk Gidung (육기둥) "Six pillars". All family members have the surname Yuk/"Six".

The renaming in Korea only applies to the -kun dub aired there; his name is retained in the -san dub aired in 2016.


Voice Acting

In the first two sonosheets, Osomatsu was voiced by the actress Minori Matsushima. However, she did not carry forth to the 1966 anime and the role was recast with the next two sonosheets to be Midori Kato, who had taken over the role for the series. Kato would also reprise as Osomatsu in his cameos in Toei's 1969 Moretsu Ataro anime.

By 1988, a new cast was issued for the new anime adaptation and the role of Osomatsu was taken by Yo Inoue, who was notably not utilized for other characters in the series (other than Totoko's mother in episode 19), as she was considered to be playing a "protagonist" role.

After Inoue's death in 2003, the role of Osomatsu would be played by Chihiro Kusaka in the Daiichi pachislot games and she would resume the role for the 2017 Pachislot Osomatsu-kun. A brief diversion occurred, however, when Yui Shoji took on the role for SanThree's CR Osomatsu-kun in 2012.

With the release of Osomatsu-san, Sakurai plays Osomatsu in all roles and ages present in the series, with no separate actress used for the Showa-era 10-year old Osomatsu.

Live Action

In 1985, Osomatsu would be portrayed by the actor Yosuke Nakajima in Fuji TV's Monday Dramaland special.


Main article: Osomatsu/Gallery

Episode Appearances

1966 Anime

Osomatsu/1966 Anime Episode Appearances

1988 Anime

Osomatsu/1988 Anime Episode Appearances

2015 Anime

Osomatsu/Osomatsu-san Episode Appearances


  • Like the other sextuplets and members of the Matsuno family, his surname was initially not set in place and had appeared early on as Yamano. By 1964, it would be set as Matsuno, along with his birthday of May 24th.
  • A Fujio Pro statement on a 2016 TV program about the impact of -san had stated that Osomatsu may not necessarily be meant as the eldest sextuplet, despite the title being named after him. However, this is contradicted by how Fujio Pro has in fact strictly identified him as the eldest since at least the 1980s, along with the Pierrot anime.
  • As mentioned before, Osomatsu's character design is subject to use through Akatsuka's Star System; he was notably re-used in the 1971 Akatsuka manga "Let's La Gon", depicted as Gon's deceased eldest brother. Hatabo and Chibita's designs were also re-used for two of Gon's other dead siblings. Before then, he had cameos in the first run of Akko-chan alongside his brothers, and is the most commonly-seen of the sextuplets to pop up in other Akatsuka works to represent the group.

External Links