Netflix has steadily turned Korean webtoons into some of its biggest global conversation starters, blending cinematic action with deeply personal stories. Agent Kim Reactivated arrives with that same promise, but this time the emotional core is not romance or revenge alone. It is the story of an ordinary father whose quiet life hides a past capable of shaking entire criminal networks, making this one of the platform’s most intriguing action dramas of 2026.

Every memorable action hero needs more than explosive fight scenes. They need a cast that can balance emotional vulnerability with high stakes tension. Agent Kim Reactivated assembles a lineup filled with familiar faces from acclaimed Korean dramas, each bringing years of experience across thrillers, fantasy, crime, and heartfelt character pieces. 

Meet the cast bringing Agent Kim Reactivated to life

So Ji-sub as Agent Kim (Mr. Kim) – Fresh off Mercy for None, So Ji-sub leads the series as the seemingly ordinary office worker hiding an extraordinary past as an elite black operative. His restrained screen presence has long made him one of Korea’s defining action stars.

Choi Dae-hoon as Sung Han-soo – Known for The WONDERfools, Choi Dae-hoon joins the ensemble as Sung Han-soo. While Netflix has not revealed extensive character details, his addition signals another layered performance from an actor recognized for portraying morally complex figures.

Yoon Kyung-ho as Park Jin-cheol – Following his memorable work in The Trauma Code: Heroes on Call, Yoon Kyung-ho plays Park Jin-cheol. His reputation for grounding emotionally charged stories suggests an important supporting role within Agent Kim’s dangerous mission.

Joo Sang-uk as Ju Gang-chan – Best known internationally through Alchemy of Souls, Joo Sang-uk portrays Ju Gang-chan. His commanding screen presence makes him a natural fit for a character expected to play a significant part in the unfolding conspiracy.

Son Na-eun as Jung Sang-a – Agency star Son Na-eun steps into the role of Jung Sang-a. Her growing dramatic range adds another compelling layer to the show’s expanding network of allies and adversaries.

Seo Su-min as Kim Min-ji – Seo Su-min plays Kim Min-ji, Agent Kim’s rebellious teenage daughter whose disappearance becomes the catalyst for the entire story. Her kidnapping forces her father to abandon his quiet civilian life and return to the dangerous world he once escaped.

Yu Ji-ahn as Ju Hye-ri – Yu Ji-ahn rounds out the confirmed cast as Ju Hye-ri, another important figure whose role is expected to connect with the series’ larger web of secrets.

The series premieres with two episodes each week every Friday and Saturday beginning June 26. Agent Kim Reactivated is adapted from the hit webtoon Manager Kim by writer Toy and illustrator Jeong Jong-taek, continuing Netflix’s growing investment in successful Korean webtoon properties. The drama is written by Nam Dae-joong, known for Love Reset, while Yi Seung-young of Wonderful World directs alongside Lee So-eun. That combination of experienced filmmakers and a beloved source material has already generated considerable anticipation among K-drama fans.

If the casting introduces the players, the story reveals why this adaptation has become one of Netflix’s most closely watched Korean releases. On paper, it begins like a family drama. Beneath the surface, it quickly transforms into an espionage thriller where every ordinary moment hides years of buried secrets. 

A father, a secret past, and Netflix’s next webtoon adaptation

At the center of the story is Mr. Kim, a quiet office employee doing everything possible to raise his teenage daughter after the death of his wife. He avoids conflict, apologizes even when he has done nothing wrong, and appears to be the last person anyone would suspect of carrying a dangerous past. Everything changes when his daughter Min-ji disappears, leaving behind clues that point toward a kidnapping. 

Faced with losing the only family he has left, Mr. Kim sheds his ordinary identity and becomes Agent Kim once again, unleashing the elite combat and intelligence skills that once made him one of the most formidable operatives in the field. The series also strengthens Netflix’s growing catalogue of webtoon adaptations. Following projects such as Sweet Home, All of Us Are Dead, and the upcoming Granny, the streaming giant continues to mine Korea’s thriving webtoon industry for stories that blend cinematic action with emotionally driven storytelling. 

Agent Kim Reactivated fits perfectly within that strategy by pairing grounded family drama with explosive spy action, creating a narrative that feels both deeply personal and blockbuster in scale. With an acclaimed cast, a proven webtoon foundation, and a father driven by love rather than revenge, Agent Kim Reactivated has all the ingredients of another memorable Korean action drama.

Will Agent Kim become your next K-drama obsession? Share your thoughts in the comments.