Weak Hero Class 1 - Cast

Weak Hero Class 1 (2022– )
18+
TV Mini-series | 40 min | Action, Drama, Thriller

Weak Hero Class 1 (2022– )

18+

TV Mini-series | 40 min | Action, Drama, Thriller

Yeon Shi-eun is a model student, who ranks at the top at his school. Physically, he appears like a weak boy, but, by using his smarts, tools, and psychology, he fights against violence that takes place inside and outside of his school.

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Cast	+ Add Cast
31 cast members

Name	Episodes	Known for
Park Ji-hoon Gray Yeon / Yeon Shi-eun Gray Yeon / Yeon Shi-eun See fewer	16	At A Distance, Spring Is Green (2021)
Hong Kyung Bryce Oh / Oh Beom-seok Bryce Oh / Oh Beom-seok See fewer	10	Innocence (2020)
Choi Hyun-wook Ahn Soo-ho / Stephen Ahn Ahn Soo-ho / Stephen Ahn See fewer	9	Twenty Five Twenty One (2022)
Ryeoun Park Hoo-min Park Hoo-min See fewer	8	The Secret Romantic Guesthouse (2023)
Kim Su-gyeom Jeon Young-bin Jeon Young-bin See fewer	8	Duty After School (2023)
Lee Yeon Young Yi Young Yi See fewer	8	Kill Boksoon (2023)
Shin Seung-ho Jeon Seok-dae Jeon Seok-dae See fewer	8	Alchemy of Souls (2022)
Hwang Sung-bin Tae-hoon Tae-hoon See fewer	8	D.P. (2021)
Cha Woo-min Kang Woo-yeong Kang Woo-yeong See fewer	8	Night Has Come (2023)
Jo Han-chul Oh Jin-won Oh Jin-won See fewer	8	The Wailing (2016)
Yoon Jung-Hoon Jung Chan Jung Chan See fewer	8	SF8 (2020)
Na Chul Kim Gil-soo Kim Gil-soo See fewer	8	Concrete Utopia (2023)
Choi Min-yeong Seo Jun Tae Seo Jun Tae See fewer	8	Entertainer (2016)
Bae Na-Ra Na Baek Jin Na Baek Jin See fewer	8	D.P. (2021)
Lee Min-Jae Ko Hyeon Tak Ko Hyeon Tak See fewer	8	Train (2020)
Lee Jun-young Geum Seong Je Geum Seong Je See fewer	8	Goodbye to Goodbye (2018)
Yuuki Luna Various Various See fewer	8	Étoile (2025)
Lorna Duyn Various Various See fewer	8	The Young and the Restless (1973)
Yoo Su-bin Choi Hyo Man Choi Hyo Man See fewer	8	Along With the Gods: The Two Worlds (2017)
Jeon Bae-soo Park Jin-Cheol Park Jin-Cheol See fewer	8	The Wailing (2016)
Andy Luu Seo Jun Tae Seo Jun Tae See fewer	8	The Eternaut (2025)
River Ramos Khan Nguyen Khan Nguyen See fewer	6	Martial Law (2023)
Park Kwan-Woo Park Ju-Seong Park Ju-Seong See fewer	5	Weak Hero Class 1 (2022)
Lee Jae-Yong Delinquent Delinquent See fewer	3	Study Group (2025)
Jang Dae-woong Kim Won-seok Kim Won-seok See fewer	2	Hope (2013)
Kim Tae-joon Police officer #3 Police officer #3 See fewer	1	Peninsula (2020)
Jo Ah-young Jeong Yeong-bin's friend Jeong Yeong-bin's friend See fewer	1	Squid Game (2021)
Park Sang-eun Lee Jung-chan's friend Lee Jung-chan's friend See fewer	1	Night Has Come (2023)
Jo An-young Jeon Young Bin's friend Jeon Young Bin's friend See fewer	1	A Good Day to Be a Dog (2023)
Jonathan Tanigaki Multiple Characters Multiple Characters See fewer	1	Paradise (2025)
Yu Seong-yong Baseball player Baseball player See fewer		Love in Sadness (2019)