Honestly, if you’ve spent any time on Netflix in the last few years, you’ve definitely seen Yoo In Soo. You just might not have realized it was the same guy. He’s like a human chameleon. One minute he’s a terrifying, unkillable high school bully with one eye, and the next he’s a bumbling, naive country boy who can literally smell demons with his nose.
Finding a consistent thread in Yoo In Soo movies and tv shows is actually pretty hard because he refuses to be typecast. He doesn't just play characters; he disappears into them until you’re sitting there googling "who is the guy in the track jacket?" halfway through an episode.
The Gwi-nam Effect: Why Everyone Knows His Face
Most people first got their "who is this guy?" moment during All of Us Are Dead in 2022. He played Yoon Gwi-nam. He wasn't just a villain; he was a nightmare. While everyone else was busy turning into mindless zombies, he became a "halfbie"—part human, part undead, and 100% terrifying.
The nuance he brought to that role was insane. He made you hate him, then he made you fear him, and then he made you wonder how a kid from Cheonan (where he’s actually from, by the way) could look so natural biting people's throats out. It was a massive breakout. It even earned him a Baeksang nomination for Best New Actor. But here's the kicker: if you only know him as Gwi-nam, you’re missing about 90% of what makes him great.
Beyond the Zombies: His Best TV Roles
After he finished terrorizing Hyosan High, he did a total 180. He joined the cast of Alchemy of Souls as Park Dang-gu. Gone was the blood and the murderous intent. Instead, we got this bright-haired, lovable, and surprisingly emotional heir to Songrim. The contrast was jarring in the best way possible.
If you’re looking to binge-watch his work, here’s the real-deal list of shows where he actually makes an impact:
- The Uncanny Counter 2 (2023): He plays Na Jeok-bong. This role is a masterclass in physical comedy. He’s a new Counter whose special power is sniffing out evil spirits. It’s a goofy role, but he plays it with so much heart that you can’t help but root for the guy.
- The Good Bad Mother (2023): He plays Bang Sam-sik, the town’s resident troublemaker. He’s sort of a loser, but a lovable one. Again, the range is just wild.
- Daily Dose of Sunshine (2023): He plays a nursing trainee dealing with panic disorder. This was a much more grounded, sensitive performance. It proved he doesn’t need supernatural gimmicks or fake blood to carry a scene.
- The Midnight Studio (2024): He plays Assistant Manager Go. It’s a bit of a quirkier role in a show about a photographer for the dead. It’s worth the watch just to see how he handles the supernatural-procedural vibe.
Did You See Him in These? (The Deep Cuts)
Yoo In Soo has been grinding since 2017. If you go back and watch Strong Girl Bong-soon, you’ll spot him as a tiny, baby-faced high schooler named Kang-goo. He was basically a lackey for the bigger bullies. It’s hilarious to see him there knowing he’d eventually become the ultimate K-drama bully a few years later.
He also popped up in Gangnam Beauty, At Eighteen, and School 2017. Most of these were bit parts, but they show his progression. He didn't just walk into a lead role; he earned it by being the best "extra" on set for half a decade.
Yoo In Soo in Movies: The Big Screen Moves
While he’s definitely a king of the small screen, his movie career is starting to heat up. In 2023, he starred in The Loan Boy (also known as Usury Academy). He played Nam-yeong, a character that felt like a return to his darker roots—raw, desperate, and gritty.
He also had a role in Swallow (2023), playing a younger version of a character in a story about student protests and hidden pasts. It’s a much more serious, historical piece of cinema that shows he’s looking to do more than just "popular" hits.
What's Happening in 2026?
As of right now, everyone is waiting for All of Us Are Dead Season 2. There’s been massive speculation about whether Gwi-nam is actually dead (I mean, he fell off a building and got nuked, but this is K-drama). While the new season is expected to drop in 2026, his involvement is the industry's biggest "maybe."
More importantly, he’s got a new film titled Boy (보이) that released in early January 2026. He’s starring alongside Jo Byeong-kyu and Seo In-guk. It’s a gritty, youthful drama that is already getting buzz for its "indie-movie-meets-blockbuster-acting" feel.
The Truth About His Acting Style
Some critics say he overacts in comedies like The Uncanny Counter, but honestly, that's just his style. He’s a physical actor. He uses his whole body—his posture, the way he tilts his head, even the way he walks changes depending on the character. In The Good Bad Mother, he literally felt like a different human being than the one we saw in Alchemy of Souls.
He’s also not afraid to look "ugly" or "weak" on camera. A lot of young actors are obsessed with looking like idols 24/7. Yoo In Soo doesn't care. If the character needs to look like a sweating, crying mess, he goes there. That’s probably why he’s working so much. Directors know he’s reliable.
How to Watch His Work Right Now
If you want to get the full experience of Yoo In Soo movies and tv shows, you basically need a Netflix subscription and a Viki account. Most of his big hits are on Netflix, while his earlier, more obscure work is scattered across other streaming platforms.
If you're new to him, start with All of Us Are Dead to see the intensity. Then immediately jump to The Good Bad Mother or The Uncanny Counter 2. The whiplash you’ll get from seeing his range is the best way to appreciate what he’s doing.
Actionable Next Steps
To really dive into his filmography, start by tracking his smaller roles in the "School" series of dramas. It gives you a great perspective on how he built his craft. Also, keep an eye on the 2026 film festival circuit; Boy is expected to travel to international festivals, which might be your best chance to see him in a more "artistic" light before he likely heads off for his mandatory military service, which has been a topic of fan discussion lately.
Check out his Instagram (@k.a_innsoo) if you want to see the "real" him—he’s surprisingly stylish and way less scary than Gwi-nam.
Summary of Must-Watch Titles:
- For Thrills: All of Us Are Dead
- For Laughs: The Uncanny Counter 2
- For Tears: Daily Dose of Sunshine
- For the Big Screen: Boy (2026)
The guy is only in his late 20s, and he’s already one of the most recognizable faces in the industry. Whether he’s a hero, a villain, or the comedic relief, you can bet he’s going to be the most interesting person in the frame.
