Let’s talk about Matsuno Ichimatsu—a name that definitely stands out in the world of Mr. Osomatsu, or as some fans call it, Osomatsu-san. Originally starting as a manga creation by Fujio Akatsuka back in 1962, the series got a fresh anime adaptation in 2015, bringing the chaotic yet oddly relatable lives of six identical brothers into the spotlight. And among them, Matsuno Ichimatsu really makes an impression.

Now, Matsuno Ichimatsu is the fourth brother in the lineup and technically the second oldest—yeah, the birth order gets a little confusing, but that’s part of the charm. What’s not confusing is his vibe: dark, introspective, and more than a little pessimistic. If you’ve seen him, you probably remember his signature look—black and white striped hoodie, oversized pants, and that ever-present aura of gloom. He speaks in a flat, almost robotic monotone, avoids eye contact like it’s a sport, and generally seems like he’d rather be anywhere else. Honestly, Matsuno Ichimatsu just radiates “I need five minutes alone.”

But here’s the thing—don’t let that exterior fool you. Underneath all that quiet detachment, Matsuno Ichimatsu has a surprisingly warm heart. Sure, he’s the most introverted of the six siblings, often retreating into solitude or bonding with his beloved pet cat, Jyushimatsu (who, let’s be real, might be his only true confidant). Yet, time and again, Matsuno Ichimatsu shows up when it matters. Whether it’s protecting the younger brothers or quietly supporting one of them through a rough patch, he proves he’s fiercely loyal. His actions may be subtle, but they speak volumes.

And speaking of subtlety, Matsuno Ichimatsu’s way of expressing himself is anything but loud. He channels his thoughts through art, writing, and the occasional sarcastic remark—because, let’s face it, talking isn’t exactly his strong suit. That said, his empathy runs deep. He picks up on emotions others miss, sensing tension before anyone else does. It’s no wonder fans see Matsuno Ichimatsu as someone who fits the INFJ personality type—the classic “advocate” or “counselor” archetype. Introverted, intuitive, feeling, and judging? Yeah, that checks out. Matsuno Ichimatsu clearly values deep, meaningful connections, even if he struggles to initiate them.

He also seems to carry the hallmarks of an Enneagram Type 4—the Individualist. Matsuno Ichimatsu doesn’t just feel emotions; he lives them. There’s a poetic sadness to him, a longing for authenticity in a world that often feels shallow. He wrestles with identity, purpose, and belonging—classic Type 4 territory. But there’s another layer: hints of Type 9, The Peacemaker. You can see it in how he avoids conflict, sometimes to the point of withdrawing completely. He’d rather retreat into his hoodie and music than deal with drama. Still, his desire to stand out—to be seen for who he truly is—keeps him rooted in that Type 4 energy.

So, what’s the takeaway? Well, Matsuno Ichimatsu from Mr. Osomatsu is far more than just the gloomy brother in the striped hoodie. He’s complex, layered, and deeply human—flaws and all. Fans have come to love Matsuno Ichimatsu not despite his quirks, but because of them. His quiet kindness, emotional depth, and artistic soul make him one of the most compelling characters in the series. Whether he’s scribbling poetry, cuddling Jyushimatsu, or reluctantly saving the day, Matsuno Ichimatsu leaves a lasting impression.

In the end, while labels like INFJ or Enneagram Type 4 can help us understand Matsuno Ichimatsu better, they don’t define him. What matters is how real he feels—the kind of character who reminds us that even the quietest people carry entire universes inside. And honestly? We’re all a little bit Matsuno Ichimatsu sometimes.