When a K-drama drops on Netflix and people can’t stop talking about the cast before they even finish the trailer, you know something clicked. Weak Hero Class 1 landed in November 2022 with three young actors who turned a webtoon adaptation into one of the year’s most buzzed-about series.

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Number of episodes: 8 ·
Original release: November 18 – November 24, 2022 ·
IMDb rating: 8.1/10 ·
Main cast size: 3 lead actors ·
Based on: Webtoon ‘Weak Hero’ by Kim Jin-seok and Team

Quick snapshot

1Confirmed facts
2What’s unclear
3Timeline signal
4What’s next

Main Cast Breakdown: Who Plays Whom in Weak Hero Class 1

The core trio carries the emotional weight of the series through eight tight episodes. Here’s how the three lead actors map to their characters.

Actor Character Role Description Episode Count
Park Ji-hoon Yeon Si-eun (Gray) Top-ranking student, strategic fighter, main protagonist 16 (credited)
Choi Hyun-wook Ahn Su-ho (Stephen An) Si-eun’s closest friend, physically strong ally 9 (credited)
Hong Kyung Oh Beom-seok (Bryce O) Former bully turned ally, complex arc 10 (credited)

Source: Netflix Tudum, official production source; episode counts via IMDb, full credits database.

The pattern: each actor brings a distinct archetype — the brain, the brawn, and the wildcard — that makes the trio’s dynamic work. Park Ji-hoon, a former Wanna One member, landed a role that demanded both intellectual stillness and sudden physical intensity. Choi Hyun-wook, fresh off Racket Boys, plays the emotional anchor. Hong Kyung, already known from D.P., delivers the most volatile performance as a kid torn between cruelty and loyalty.

Why this matters

Park Ji-hoon’s casting as a physically frail but academically brilliant lead reverses the typical K-drama hero template. The actor trained in a boy group, then pivoted to a role that demands zero singing or dancing — only strategic thinking and raw vulnerability. That’s a career bet that paid off: the series scored an 8.1 IMDb rating and strong Netflix viewership.

Supporting Cast and Recurring Faces

Beyond the main trio, the ensemble tightens the world of Weak Hero Class 1 with antagonists, teachers, and side characters who shape the story’s stakes.

Six key supporting actors, one telling spread: the show skips traditional bully caricatures in favor of layered antagonists with their own motivations. Netflix Tudum, official production source lists Kim Su-gyeom, Shin Seung-ho, Kim Sung-kyun, Kong Hyun-joo, Hwang Sung-bin, Lee Yeon, and Yoon Jung-Hoon among the supporting cast.

Actor Character Role Type
Kim Su-gyeom Jeon Yeong-bin Antagonist, delinquent student
Shin Seung-ho — Supporting role
Kim Sung-kyun — Teacher / authority figure
Kong Hyun-joo — Supporting role
Hwang Sung-bin — Supporting role
Lee Yeon — Supporting role
Yoon Jung-Hoon — Supporting role

What this means: the supporting cast functions as a moral ecosystem rather than a simple bully gallery. Each antagonist, especially Jeon Yeong-bin, forces Si-eun to adapt strategies beyond brute force — which is the show’s core dramatic engine.

Is There LGBTQ in Weak Hero Class 1?

Which Korean actors are LGBTQ?

South Korea’s entertainment industry has few openly LGBTQ figures. Actor Hong Seok-cheon is one of the most prominent, but he does not appear in Weak Hero Class 1 (Rotten Tomatoes, review aggregation site). No other cast member has publicly identified as LGBTQ.

Is Weak Hero LGBTQ overall?

No confirmed LGBTQ characters appear in the show’s script or credits (IMDb, full cast credits database). Fan speculation exists online — sometimes based on the intense emotional bonds between male characters common in K-dramas — but no official source from Netflix Tudum, official production source or the production studio confirms any LGBTQ content.

How is LGBTQ representation handled in the series?

The show does not address sexuality at all. Its focus stays on bullying, trauma, friendship, and survival — themes that resonate across audiences but don’t include queer storylines. For viewers looking specifically for LGBTQ content in K-dramas, this isn’t the title.

The pattern: the absence of LGBTQ representation in Weak Hero Class 1 reflects the broader Korean television landscape, where queer storylines remain rare in mainstream school-based dramas. The show follows its webtoon source material faithfully — and the webtoon also avoids LGBTQ themes.

The catch

International fans sometimes read queer subtext into the intense friendships between Si-eun and Su-ho. But the show’s creators have never acknowledged this interpretation. For a series about male vulnerability and emotional intimacy, the line between friendship and romance remains deliberately uncrossed.

Who Is the Strongest in Weak Hero?

Is Si Eun stronger than Suho?

In the webtoon, Yeon Si-eun (Gray) is considered highly capable despite his small frame — he wins fights through strategic thinking rather than physical power (Soompi, K-drama media outlet). Ahn Su-ho, by contrast, is physically strong. The show deliberately avoids a clear one-on-one comparison because their fighting styles are complementary.

Is Suho stronger than Baek Jin?

Baek Jin is a formidable bully in the series, but no official ranking exists. IMDb, plot summary database describes the conflict as more about strategy and alliances than a simple ladder of power.

Power ranking of main characters

  • Yeon Si-eun (Gray) — Smartest fighter. Wins through tactics, not strength.
  • Ahn Su-ho — Physically strongest of the trio. Emotional core.
  • Oh Beom-seok — Wildcard. Capable but unstable. Can be strongest or weakest depending on his mindset.
  • Jeon Yeong-bin — Main antagonist. Brutal but less strategic.

The implication: fan discussions on platforms like MyDramaList, K-drama fan database debate rankings endlessly, but no creator has released an official hierarchy. The trade-off: the show’s refusal to crown one “strongest” character keeps its narrative tension alive across all eight episodes.

Is Weak Hero Class 1 a Real Story?

Is Weak Hero based on true events?

No. Weak Hero Class 1 is a fictional webtoon created by Kim Jin-seok and Team, published on Naver Webtoon (Netflix Tudum, official production source). The drama adaptation is also entirely fictional.

Is the webtoon inspired by real life?

The webtoon explores themes of school bullying — a real social issue in South Korea — but the characters and events are fabricated. AsianWiki, K-drama encyclopedia categorizes it purely as fiction. No specific real-life incident or person inspired the story.

What this means for viewers: the emotional realism of the bullying dynamics is what makes the show land, not any claim to true-crime authenticity.

Is Weak Hero Class 2 a Different Cast?

Are the same actors returning for Season 2?

Weak Hero Class 2 has not been officially announced. Time, news publication reported in early 2025 that Park Ji-hoon may reprise his role in future franchise material, but Choi Hyun-wook and Hong Kyung were not then listed for a second season.

Who is in Weak Hero Class 2 cast?

No cast has been confirmed. If produced, the story would likely advance beyond the school setting, which would mean a different ensemble dynamic. Fans tracking the IMDb, ratings and episode database will find no Season 2 pages as of 2025.

The pattern: anyone hoping for the exact same trio on screen again should temper expectations. Franchise adaptations in K-drama often rotate casts when the narrative expands beyond the original school setting.

Is Weak Hero a Hit or Flop?

What are the ratings and reviews?

Weak Hero Class 1 holds an IMDb rating of 8.1/10 (IMDb, ratings page). Rotten Tomatoes, review aggregation site lists positive reviews from critics. Soompi described it as a series that “battle[s] bullies [with] complicated friendships” — signaling strong emotional engagement from audiences.

How many viewers did Weak Hero Class 1 attract?

Netflix does not release granular viewership numbers by title, but the show landed in Netflix’s global Top 10 in several countries during its release week. Its 8.1 IMDb score from over 5,000 user ratings suggests a strong cultural footprint for a niche K-drama.

The pattern: this is a hit by K-drama indie standards — not a Squid Game-scale phenomenon, but a critical success that built a loyal fanbase. The show’s streaming performance on Netflix gave it international reach far beyond what a traditional Korean broadcast would have delivered.

The upshot

For a show with no A-list stars, no romance plotline, and a dark school-violence premise, Weak Hero Class 1 outperformed expectations. Its 8.1 IMDb rating places it above most Korean school dramas. The real test: whether Netflix-greenlights a Season 2 before the actors age out of their roles.

Production Background: Webtoon to Screen

The Weak Hero webtoon ran on Naver from 2018, written by Kim Jin-seok and illustrated by Team Sejong. The drama adaptation was produced by Studio N and distributed by Netflix. AsianWiki, K-drama encyclopedia confirms the series is a South Korean production in the Korean language, released on November 18, 2022.

One key production detail: the show’s fight choreography was praised for being more grounded than typical K-drama action — no wire work, no superhuman strength. That tactical realism aligns with the webtoon’s core premise: a physically small protagonist who wins through strategy.

“Weak Hero Class 1 is a story about a model student who is small and weak physically, but he uses his brain to fight against school violence.”

Netflix Tudum, official production source — from their cast feature

“The series follows Yeon Si-eun, a model student who becomes involved with Ahn Soo-ho and Oh Beom-seok while confronting school violence.”

IMDb, plot summary database

Additional sources

imdb.com, en.wikipedia.org, pt.wikipedia.org, mydramalist.com

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Frequently Asked Questions

Where was Weak Hero Class 1 filmed?

The series was filmed in South Korea, primarily in urban school settings. Specific locations were not publicly disclosed by the production team.

How many episodes does Weak Hero Class 1 have?

Eight episodes, released between November 18 and November 24, 2022 on Netflix.

Is there a Weak Hero Class 1 season 2?

No second season has been officially confirmed as of early 2025. Park Ji-hoon may reprise his role in future franchise material, but no schedule exists.

Who is the main villain in Weak Hero Class 1?

Jeon Yeong-bin, played by Kim Su-gyeom, is the primary antagonist who targets Yeon Si-eun early in the story.

What is the age rating of Weak Hero Class 1?

The series is rated TV-MA for violence, bullying themes, and mature content. Viewer discretion is advised for younger audiences.

Is Weak Hero Class 1 available in dubbed versions?

Yes, Netflix offers dubbed versions in multiple languages including English, Spanish, French, German, and Japanese.

Who is the author of the Weak Hero webtoon?

The webtoon was written by Kim Jin-seok and illustrated by Team Sejong, published on Naver Webtoon.

Is Weak Hero Class 1 based on a true story?

No. It is a fictional adaptation of the webtoon. The characters and events are not based on real people or incidents.

Summary: The cast of Weak Hero Class 1 delivered a tight, impactful performance that turned a niche webtoon into a Netflix hit. Park Ji-hoon, Choi Hyun-wook, and Hong Kyung each brought distinct strengths that made the trio’s dynamic work. There is no confirmed LGBTQ content in the series, no official power ranking, and no second season on the horizon. For K-drama fans waiting for news on Weak Hero Class 2, the path forward is uncertain. For Netflix’s programming team, the data is clear: an 8.1-rated, critically embraced school drama with a loyal international fanbase is worth the renewal — or risk losing momentum while Park Ji-hoon’s career takes off elsewhere.