Weak Hero has captivated audiences with its intense portrayal of school violence and the resilience of youth. As the story progresses from Class 1 to Class 2, we witness the return of familiar faces and the introduction of new characters—each adding depth to the gripping narrative. Let’s explore every cast member from both seasons, along with their real ages in 2025.
Weak Hero Class 2 Cast & Their Real Age (2025)
Main Characters
1. Park Ji-hoon as Yeon Si-eun
- Real Age (2025): 26 years old (Born May 29, 1999)
- Seasons: Class 1 & Class 2
- Role: A top student who uses his intelligence and tactics to stand up against bullies.
2. Choi Hyun-wook as Ahn Su-ho
- Real Age (2025): 23 years old (Born January 30, 2002)
- Seasons: Class 1 & Class 2
- Role: A fearless and strong fighter who stands by Si-eun as a loyal friend.
3. Hong Kyung as Oh Beom-seok
- Real Age (2025): 29 years old (Born February 14, 1996)
- Seasons: Class 1 & Class 2
- Role: A quiet and insecure student whose inner conflict plays a big role in the series.
New Additions in Class 2
4. Ryeoun as Park Hu-min (Baku)
- Real Age (2025): 27 years old (Born August 26, 1998)
- Seasons: Class 2
- Role: A student with a strong sense of justice who becomes an ally to Si-eun.
5. Choi Min-young as Seo Jun-tae
- Real Age (2025): 23 years old (Born October 9, 2002)
- Seasons: Class 2
- Role: A victim of bullying who finds strength and support through new friendships.
6. Lee Min-jae as Go Hyun-tak (Gotak)
- Real Age (2025): 25 years old (Born January 21, 2000)
- Seasons: Class 2
- Role: A strong and dependable friend, known for his loyalty and fighting skills.
7. Bae Na-ra as Na Baek-jin
- Real Age (2025): 26 years old (Born March 19, 1999)
- Seasons: Class 2
- Role: The strategic and composed leader of the Union gang.
8. Lee Jun-young as Geum Seong-je
- Real Age (2025): 28 years old (Born January 22, 1997)
- Seasons: Class 2
- Role: Baek-jin's hot-headed and unpredictable right-hand man.
9. Yoo Su-bin as Choi Hyo-man
- Real Age (2025): 32 years old (Born November 6, 1992)
- Seasons: Class 1 (Ep. 8) & Class 2
- Role: Leader of Class 3 at Eunjang High, and part of the older delinquents group.
10. Cho Jung-seok as Choi Chang-hee
- Real Age (2025): 44 years old (Born December 26, 1980)
- Seasons: Class 2
- Role: CEO of Cheongang—an adult gang that oversees Union activities.
Supporting Characters from Class 1
11. Lee Yeon as Yeong-i
- Real Age (2025): Age not publicly known
- Seasons: Class 1
- Role: A runaway who becomes close to Si-eun and Su-ho.
12. Shin Seung-ho as Jeon Seok-dae
- Real Age (2025): 29 years old (Born November 11, 1995)
- Seasons: Class 1
- Role: A feared school delinquent and gang leader.
13. Kim Su-gyeom as Jeon Yeong-bin
- Real Age (2025): Age not publicly known
- Seasons: Class 1
- Role: A brutal and sadistic bully who targets Si-eun.
14. Cha Woo-min as Kang Woo-young
- Real Age (2025): Age not publicly known
- Seasons: Class 1
- Role: A teenage MMA fighter with a personal vendetta against Su-ho.
15. Na Cheol as Kim Gil-soo
- Real Age (2025): Age not publicly known
- Seasons: Class 1
- Role: Head of a criminal group that manipulates and exploits troubled youth.
| Actor Name | Character Name | Real Age (2025) | Season(s) Appeared |
|---|---|---|---|
| Park Ji-hoon | Yeon Si-eun | 26 | Class 1 & 2 |
| Choi Hyun-wook | Ahn Su-ho | 23 | Class 1 & 2 |
| Hong Kyung | Oh Beom-seok | 29 | Class 1 & 2 |
| Ryeoun | Park Hu-min | 27 | Class 2 |
| Choi Min-young | Seo Jun-tae | 23 | Class 2 |
| Lee Min-jae | Go Hyun-tak | 25 | Class 2 |
| Bae Na-ra | Na Baek-jin | 26 | Class 2 |
| Lee Jun-young | Geum Seong-je | 28 | Class 2 |
| Yoo Su-bin | Choi Hyo-man | 32 | Class 1 & 2 |
| Cho Jung-seok | Choi Chang-hee | 44 | Class 2 |
| Lee Yeon | Yeong-i | 25 | Class 1 |
| Shin Seung-ho | Jeon Seok-dae | 29 | Class 1 |
| Kim Su-gyeom | Jeon Yeong-bin | N/A | Class 1 |
| Cha Woo-min | Kang Woo-young | N/A | Class 1 |
| Na Cheol | Kim Gil-soo | 22 | Class 1 |
Final Thoughts
From strategic masterminds like Si-eun to powerhouse fighters like Su-ho and Gotak, Weak Hero offers a layered look into friendship, trauma, and bravery. With the second season expanding its universe, fans are treated to even deeper stories and more thrilling confrontations.
Which character is your favorite? Let us know in the emails and social accounts!
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