Weak Hero Class 2 Cast: All Actors & Characters (Netflix 2025)

Fans of Weak Hero Class 1 have been waiting for the next chapter, and the cast of Weak Hero Class 2 delivers a mix of familiar faces and fresh threats. Park Ji-hoon returns as the brilliant but ruthless Yeon Si-eun, while new antagonists from the Union raise the stakes.

Main lead character: Park Ji-hoon as Yeon Si-eun (Gray Yeon) · Supporting lead: Ryeo Un as Park Hu-min (Ben Park) · Second lead: Choi Min-yeong as Seo Jun-tae (Eugene Gale) · Antagonist group: Union (Oh Gi-gwang, Lee Myeong-ro) · Platform: Netflix · Based on: Webtoon ‘Weak Hero’ by Seopass and Kim Jin-seok

The table below captures the series core pattern: a small Eunjang crew facing a sprawling antagonist network.

Who are the main cast members of Weak Hero Class 2?

Three actors form the core of Eunjang High School’s resistance. Each brings a distinct fighting style and loyalty that drives the season’s conflict.

Park Ji-hoon as Yeon Si-eun (Gray Yeon)

• Park Ji-hoon returns as the series lead, Yeon Si-eun, the model student who uses intelligence and brutal precision to fight bullies. Netflix Tudum confirmed his return in the official release announcement (Netflix Tudum).
• His character, also called Gray Yeon in English promotional material, continues the same protagonist role from Class 1 (Netflix Tudum).

Ryeo Un as Park Hu-min (Ben Park)

• Ryeo Un takes over the role of Park Hu-min, also known as Baku or Ben Park, replacing the original actor from Season 1. MyDramaList lists him as a main cast member (MyDramaList).
• The character acts as Si-eun’s closest ally and physical powerhouse.

Choi Min-yeong as Seo Jun-tae (Eugene Gale)

• Choi Min-yeong joins the series as Seo Jun-tae, a key Eunjang student who aligns with Si-eun. The Netflix trailer explicitly names him in the lineup (Netflix Tudum).
• His English alias, Eugene Gale, appears in some international marketing.

The implication: Park Ji-hoon anchors the cast while Ryeo Un and Choi Min-yeong introduce new energy to Eunjang’s defense.

What is the release date of Weak Hero Class 2?

Netflix dropped all episodes simultaneously, making it a weekend binge for global audiences.

Netflix premiere date for Weak Hero Class 2

• The series premiered on Netflix on April 25, 2025. Netflix Tudum confirmed the date in their release news article (Netflix Tudum).
• The official trailer was released two weeks earlier, on April 11, 2025 (Netflix Tudum).

Episode count and schedule

• Weak Hero Class 2 consists of 8 episodes, each approximately 45–60 minutes long.
• All episodes dropped at once on Netflix, a common strategy for K-drama sequels on the platform.

What this means: Netflix’s release strategy favors marathon viewing for Park Ji-hoon’s performance arc across the season.

Who are the new cast additions in Weak Hero Class 2?

Season 2 introduces a web of antagonists and new allies, expanding the Eunjang universe far beyond a single school.

Union members: Oh Gi-gwang, Lee Myeong-ro

• Oh Gi-gwang plays Do Seong-mok, a ranking Union member with a cold, calculating demeanor. MyDramaList confirms his role (MyDramaList).
• Lee Myeong-ro plays Baek Dong-ha, another Union enforcer known for his ruthlessness. Same source lists him among the cast.
• Son Bo-seung reprises his role as Seoknam Gorilla, a recurring antagonist from Season 1, now aligned with the Union.

New Eunjang High School characters

• Lee Min-jae appears as Ko Hyeon-tak, a major ally in Si-eun’s circle. His exact role remains partially unclear, but MyDramaList identifies him as part of the main supporting cast (MyDramaList).
• Kim Hyung-won, Park Kwan-woo, and Cha Se-jin appear as Eunjang High School students, though specific character names are not yet publicly detailed.

Villains and antagonists

• Bae Na-ra plays Na Baek-jin, a central antagonist tied to the Union. The Netflix trailer identifies her character as a key threat (Netflix Tudum).
• Lee Jun-young plays Geum Seong-je, a violent enforcer who acts as the Union’s frontline muscle.
• Yoo Su-bin appears as Choi Hyo-man, a delinquent leader within Eunjang who becomes an obstacle for Si-eun.

The catch: Oh Gi-gwang and Lee Myeong-ro must give the Union distinct personalities, or the antagonist ensemble could blur together.

Weak Hero Class 2 expands the universe with a larger cast and a more organized enemy. For fans of the webtoon and the first season, the core appeal remains: watching an underdog outthink and outfight opponents who have every advantage. The Union arc sets up Season 3 possibilities, but the real winner is the viewer who gets to see Park Ji-hoon’s performance deepen. For Netflix subscribers, the choice is clear: binge it this weekend, or risk spoilers for the rest of the year — and Park Ji-hoon’s portrayal of Yeon Si-eun makes the wait worthwhile.

Fans who want a broader overview of the ensemble can also check out the cast van Weak Hero for a detailed breakdown of actors across both seasons.

Frequently asked questions