Matsuno Osomatsu—yeah, that’s the name you’ll hear a lot when talking about Mr. Osomatsu, or as some fans call it, Osomatsu-san—is one of the six mischievous sextuplets at the heart of this wildly popular anime series. As the eldest brother, Matsuno Osomatsu often takes on the unofficial role of leader, though let’s be honest, he doesn’t exactly nail the responsibility part every time. Alongside his five nearly identical siblings, Matsuno Osomatsu is a high school dropout with zero job prospects and way too much free time, which usually leads to all kinds of chaotic antics just to keep things interesting.

Now, if you’ve seen the show, you know Matsuno Osomatsu is pure slapstick energy—he’s always getting into trouble thanks to his impulsive decisions and laid-back, sometimes lazy attitude. But hey, that’s part of his charm. Speaking of charm, Matsuno Osomatsu stands out visually, too. While the brothers can be hard to tell apart, he’s usually rocking a red hoodie over a white tee, paired with black jeans. He’s got messy brown hair with that signature curl sticking up, plus thick eyebrows that give him a perpetually scheming look. And his voice? That’s brought to life by the talented Takahiro Sakurai, who’s also voiced big names in anime like One Piece and Code Geass. So yeah, Matsuno Osomatsu definitely has some star power behind him.

Even though Matsuno Osomatsu is supposed to be the leader, he doesn’t exactly lead by example. More often than not, he makes questionable choices and dodges responsibility like it’s his job—which, ironically, it kind of should be. But here’s the thing: those flaws actually make Matsuno Osomatsu more relatable. Viewers see themselves in his mistakes, his laziness, and even his desperate attempts to avoid growing up. That’s what gives the sibling dynamic such a unique flavor—it’s chaotic, sure, but full of heart. And despite everything, Matsuno Osomatsu remains a fan favorite, largely because he’s funny, flawed, and weirdly lovable in his own way.

When it comes to personality, there’s a strong case that Matsuno Osomatsu fits the ESFP type. If you’re into personality theory, you’ll know ESFPs are all about living in the moment, and Matsuno Osomatsu is basically the poster child for that. He’s constantly goofing off with his brothers, throwing parties, crashing events, and generally being the life of the party. He acts on impulse, guided more by how he feels in the moment than any long-term plan—because, let’s face it, planning isn’t really his thing.

You can also see how much Matsuno Osomatsu craves attention and new experiences. Whether he’s pulling pranks or chasing after fleeting fun, he’s always looking for the next thrill. That screams extroversion (E), no doubt. And his focus on immediate sensations and real-time reactions? That points to a sensing (S) preference rather than intuition. So yeah, Matsuno Osomatsu lives for the now—past regrets and future consequences don’t stand a chance against his spontaneity.

Sure, Matsuno Osomatsu might not be the most dependable guy around, but deep down, he cares. He values his brothers, even if they drive him crazy, and shows loyalty in his own roundabout way. At the end of the day, Matsuno Osomatsu represents a personality that puts joy, connection, and excitement first—someone who’d rather laugh through life than stress about it.

Looking deeper, Matsuno Osomatsu also lines up closely with Enneagram Type 7: The Enthusiast. This fits perfectly with his outgoing, playful nature. He’s always on the hunt for fun, novelty, and stimulation, often using humor and distraction to dodge anything serious or emotionally heavy. Commitment? Focus? Not really his strengths. He tends to bounce from one idea to the next, avoiding boredom—or discomfort—at all costs. Because of this, others might see Matsuno Osomatsu as flighty or unreliable, and he sometimes struggles to form deeper emotional bonds beyond surface-level fun.

But again, that’s just who Matsuno Osomatsu is—a character driven by the pursuit of happiness and freedom, even if it means running from responsibility. In the end, Matsuno Osomatsu embodies the classic Type 7 spirit: endlessly energetic, pleasure-seeking, and always looking for the next adventure, no matter how unrealistic or short-lived it might be.