Weak Hero Class 2, the Netflix K-drama sequel released in April 2025, features a dynamic ensemble cast blending returning stars and fresh faces in its high- stakes tale of schoolyard rivalries and unbreakable bonds.

Main Cast Highlights

Park Ji-hoon reprises his role as Yeon Si-eun (aka Gray Yeon), the brilliant but physically unassuming transfer student navigating guilt and gang wars at Eunjang High. Ryeoun plays the loyal new ally Park Hu-min (Ben Park), stepping into the fray with fierce determination. Choi Min-yeong embodies Seo Jun-tae (Eugene Gale), a tough lackey-turned-key player whose arc draws from the actor's rom-com charm in XO, Kitty.

Key Supporting Roles

Lee Min-jae brings intensity as Ko Hyeon-tak (Alex Go), while Lee Jun-young shines as the chaotic Geum Seong-je (Wolf Keum), a former K-pop idol whose ad- libs elevated fight scenes. Bae Na-ra portrays the cunning Na Baek-jin (Donald Na), and Yu Su-bin returns as bully Choi Hyo-man. Choi Hyun-wook cameo-visits as the comatose Ahn Su-ho, Si-eun's "first love" per director notes.

Full Cast Breakdown

Actor| Character| Role Type| Notable Past Work
---|---|---|---
Park Ji-hoon| Yeon Si-eun| Main| Flower Crew: Joseon Marriage Agency 1
Ryeoun| Park Hu-min| Main| Various K-dramas 5
Choi Min-yeong| Seo Jun-tae| Main| XO, Kitty 1
Lee Min-jae| Ko Hyeon-tak| Main| N/A 5
Lee Jun-young| Geum Seong-je| Main| Love and Leashes 1
Bae Na-ra| Na Baek-jin| Main| N/A 5
Yu Su-bin| Choi Hyo-man| Supporting| Crash Landing on You 1
Choi Hyun-wook| Ahn Su-ho| Supporting| Twenty-Five Twenty-One 1

Behind-the-Scenes Buzz

Director Yoo Soo-min shared emotional insights, like Park Ji-hoon's script- read tears and a grueling 4-day rooftop fight shoot. Fans on forums rave about the cast's chemistry, with Season 3 teases fueling trends—Lee Jun-young's villainy steals scenes amid brutal realism. From webtoon roots, this lineup amps the violence and loyalty themes, pulling 18+ viewers into Si-eun's world.

TL;DR: Park Ji-hoon leads with Ryeoun, Choi Min-yeong, and Lee Jun-young as standouts in a cast blending brains, brawn, and betrayal.

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