Cheong-san is On-jo's loyal childhood friend, a scrappy boy from a modest background who masks his deep feelings for her behind teasing and bravado. When the outbreak hits, his instinct to protect those he loves transforms him from a hesitant kid into one of the group's bravest fighters.
Throughout the siege, Cheong-san repeatedly throws himself into danger to buy time for the others, charging through swarms of the infected and refusing to give up on anyone trapped behind. His selflessness becomes both his greatest strength and the source of unbearable tension, as the others fear losing him.
His arc builds toward a devastating, heroic climax that crystallizes the show's themes of sacrifice and love. Cheong-san's courage leaves a lasting mark on the survivors and on the audience, cementing him as the series' beating heart.
Key Episodes
S1 E1
Episode 1
Cheong-san is thrust into the chaos as the virus spreads, rallying his friends to barricade their classroom and standing between them and the first wave of the infected.
S1 E12
Finale
Cheong-san's selfless courage reaches its emotional peak as he makes a fateful stand to protect the people he loves most.
Lee Cheong-san is one of the central figures in All of Us Are Dead, a horror/drama/thriller series that aired on Netflix from 2022. Within the narrative of All of Us Are Dead, Lee Cheong-san serves as a pivotal character whose decisions and relationships drive key story arcs throughout Season 1. The character's journey has been central to many of the show's most memorable and discussed moments.
Portrayed by Yoon Chan-young, Lee Cheong-san has become one of the most recognizable characters in modern television. Yoon Chan-young's performance brings nuance and depth to the role, creating a character that resonates with audiences on both intellectual and emotional levels. Yoon Chan-young's work has been recognized with 1 major award, reflecting the critical acclaim their portrayal has received.
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? Frequently Asked Questions
Yoon Chan-young plays Lee Cheong-san in All of Us Are Dead.
Lee Cheong-san is On-jo's devoted childhood friend and one of the bravest members of the trapped student group. Hiding his romantic feelings behind humor, he repeatedly risks his life to shield the others, becoming the emotional core of the survivors' fight.
