Weak Hero is a popular youth action-drama and webtoon following Yeon Si-eun,Main CharactersYeon Si-eun (Gray Yeon),Ahn Su-ho (Stephen Ahn):Oh Beom-seok:The story heavily focuses on the bonds of youth, the trauma of systemic bullying, and the devastating effects of jealousy and toxic social hierarchies. Main Antagonists Donald Na:The undisputed Number One delinquent of Yeongdeungpo.Oh Beom-seok: The primary antagonist of the live-action drama’s second half.Geum Seong-je.In the Weak Hero series, Eunjang High School is an all-boys school primarily composed of rough, rowdy students who struggle to get admitted elsewhere. Located in the Yeongdeungpo district, this delinquent-heavy environment forces the main protagonists to form an alliance to protect their campus from rival gangs Ben Park's Gang (Eunjang High School)A fiercely loyal group that bands together to defend themselves and their school from rival gangs.Ben Park (Big Ben): The gentle giant and unofficial leader.unmatched physical prowess, he is warm-hearted.Gray Yeon (White Mamba): The central protagonist and Ben's right-hand. Though he looks frail, he uses his sharp intellect, knowledge of physics, and environmental tools to outsmart.Gerard Jin: A former champion boxer with an enigmatic, cool-headed, and stoic demeanor.Alex Go: Ben's loyal and angsty best friend. He starts off as a somewhat anxious nerd but grows into a strong, reliable fighter in the group.Eugene Gale (Seo Juntae): An absolute fanatic about delinquent gangs. While he lacks fighting capabilities, he acts as the gang’s highly valuable information broker.Rowan Im: A boisterous, loud-mouthed bruiser who brings a comedic energy to the group but steps up when needed.Teddy Jin: A former street-smart delinquent who turns his life around to become a loyal defender of Eunjang High.The Yeongdeungpo UnionThe main antagonistic force of the series, this is a notorious, organized syndicate coalition composed of several different high schools, orchestrating violence and criminal activities across the district.Donald Na: The ruthless, calculating founder and leader of the Union. He is unparalleled in his business-like approach to controlling the district's schools and syndicate operations.Na Baek-Jin: A prominent, high-ranking member of the Union who plays a key role in enforcing the syndicate's dominance over rivals.Wolf Keum (Geum Seong-Je): A highly aggressive, fearless fighter known for his berserker-style combat and relentless brutality.Jake Ji: A formidable and calculating fighter associated with the Union who is known for his strategic mind and strong personal code.