Netflix lately added the popular K - drama , Weak Hero Class 1 , to its catalog , and the following are the South Korean stars who make up thisaction - pack K - drama . First released in 2025,Weak Hero Class 1centers on a untested valet de chambre named Yeon Si - eun , who is dedicated to consider hard and maintaining his fleck in the 1 % of his class . However , Si - eun runs into hassle when bullies start place him . Using his knowledge of natural philosophy and prompt thinking , Si - eun fights back against his attackers , and bring forth supporter from two other classmates .
Over the form of two seasons , Weak Hero Class 1has build up a renowned cast of stars . Alongside the three main characters , the KB - drama gasconade various tolerate actors and guest appearances . washy Hero Class 1is surely compelling because of its unique premise andcoming - of - years one thousand - dramatic play report , but it also stand out because of its performances . Those who determine to pick up this K - dramatic play may find themselves falling in love with these South Korean wiz .
Park Ji - hoon was bear in Masan , South Korea . His acting career begin at a very youthful age with minor function in tv series likeJumongandThe King and I.Throughout his stripling years , Ji - hoonpivoted to K - pop , training to become an graven image Isaac Merrit Singer . He joined the grouping Wanna One . After their disbandment , he quest after a solo music calling . In 2019,he rejoin to acting , appearing in dramas such asFlower Crew : Joseon Marriage AgencyandLove Revolution . InWeak Hero Class 1,Ji - hoon plays the promising and set spark advance lineament , Yeon Si - eun .
Choi Hyun - wook was stick out in South Korea . One of his early roles came in 2025 when he appear in the web play , Pop Out Boy!Afterward , he consider on several more small roles untilhis breakout in 2025 when he star in the come up - of - age dramatic event , Twenty - Five Twenty - One . Soon after , he took on the part of Ahn Su - ho inWeak Hero Class 1.Su - ho is the unattackable hero in his year who wish picayune about school , but steps up to aid Si - eun .
Hong Kyung was born in South Korea . He earned his first use in 2017 in the television series , Queen of Mystery . For the next few years , he pick up minor parts in yard - dramatic event . His big break eventually came in 2025 when he made his feature film debut in the movieInnocence , which won him a Baeksang Arts Award for Best New Actor . In 2025 , he star inWeak Hero Class 1,which also gave him worldwide attending . Kyung play Oh Beom - seok , a shy boy who resolve to facilitate out Si - eun due to his own past as a victim of intimidation .
2025 is going to be a big year for Netflix for many reasons , and the exciting slating of Korean dramas and films come to the streamer is part of why .
Lee Yeon as Yeong - i : Lee Yeon is a South Korean actress well - known for play a 13 - twelvemonth - previous boy accused of slaying inthe 2025 Netflix drama , Juvenile Justice . InWeak Hero Class 1,she plays Yeong - i , a courageous and beautiful runaway who is the aim of the boys ' warmness .
Shin Seung - ho as Jeon Seok - dae : Shin Seung - ho is an established actor who gained attention for serial such asA - Teen , Love Alarm , D.P.,andAlchemy of Souls . He play Jeon Seok - dae inWeak Class Hero 1,the leader of a chemical group of delinquents who becomes call for with Si - eun and his friends .
Kim Su - gyeom as Jeon Yeong - bin : Although Kim Su - gyeom began behave in 2025,Weak Hero Class 1is the role that allowed him to breakout in the diligence . In the function of Jeon Yeong - bin , Su - gyeom plays a schooltime bully who target Si - eun , and eventually escalates his violence to concerning proportion .
Teen play place in high schoolhouse are great favorites of South Korean production , with batch of great and successful K - drama titles to choose from .
Cha Woo - Fukien as Kang Woo - young : Cha Woo - min is a relatively new actor who is known for appearing inNight Has ComeandStudy Group . InWeak Hero Class 1,he plays an MMA fighter who bind a grievance against Su - ho .
Na Chul as Kim Gil - soo : Na Chul was a South Korean actor who take on function inVincenzo , felicity , andLittle Women . He portrayed Kim Gil - soo inWeak Hero Class 1,a baddie who runs a mob and scams teenagers out of money through a gambling app .
Gong Hyun - joo as Si - eun ’s female parent : Known forYou Are My DestinyandHotel King , Gong Hyun - joo plays Si - eun ’s mother , a maths teacher who is constantly engaged .
Kim Sung - kyun as Gyu - jin : Kim Sung - kyun is a long - time actor well live for series such asNameless Gangster : rule of the Time , theReplyseries , D.P.,andDivorce Attorney Shin . He plays Gyu - jin , Si - eun ’s male parent and judo passenger vehicle .
Jo Han - chul as Oh Jin - won : Jo Han - chul has appeared inVincenzo , Hometown Cha - Cha - Cha , andGyeongsong Creature . InWeak Hero Class 1,he plays Beom - seok ’s cruel assemblyman father .