SBS Friday-Saturday drama Agent Kim Reactivated is enjoying an extraordinary run. In just four episodes, the series surpassed a nationwide viewership rating of 21.6% while also climbing to No. 1 on Netflix’s Global Top 10 for non-English TV shows.

While audiences have praised So Ji Sub’s emotionally charged performance as a father pushed to the brink, one particular three-minute scene has become the biggest talking point in the television industry.

The reason? It marks the first time a Korean commercial television drama has featured a sequence created entirely with generative artificial intelligence—without using a single camera during production.

Before each episode begins, viewers briefly see a disclaimer stating that “AI-based technology was used in parts of the production process.” Many may have overlooked the message, but it foreshadows one of the drama’s most groundbreaking achievements.

The three-minute sequence depicts Manager Kim’s past as a covert special agent. Explosive buildings, high-speed car chases through snowy tunnels, dramatic vehicle crashes, and plunges into dark rivers create a breathtaking action scene that would normally require enormous budgets and significant safety risks if filmed in real life.

Surprisingly, neither So Ji Sub nor stunt performers actually carried out those dangerous scenes. Instead, they were recreated using a “digital double” developed through the Korean AI platform AICRON in collaboration with VFX specialists at Morpheus Studio.

Many viewers admitted they had no idea they were watching AI-generated footage.

Generative AI has often been criticized for producing inconsistent facial features, distorted body movements, or unnatural transitions between shots. However, Agent Kim Reactivated demonstrated a level of realism that convinced even careful viewers. From So Ji Sub’s signature physique and powerful fight choreography to subtle facial expressions during emotional close-ups, the digital recreation was remarkably convincing.

Comments quickly flooded online communities, with viewers saying, “If they hadn’t told us it was AI, I would have believed So Ji Sub actually filmed those dangerous scenes himself.”

Rather than serving as a minor visual effect or background enhancement, AI successfully carried an entire dramatic sequence while maintaining both action and emotional storytelling, marking a major milestone for Korean television production.

The emergence of digital double technology also presents significant advantages for actors.

Most importantly, it dramatically improves safety. Dangerous action scenes involving explosions, falls, or high-speed collisions have always carried the risk of serious injury, even when professional stunt performers are involved. AI-generated doubles can eliminate many of those physical dangers.

The technology could also extend actors’ careers. Now nearly 30 years into his acting career and approaching his late 40s, So Ji Sub reportedly underwent months of intensive combat training to prepare for Agent Kim Reactivated. While dedication remains essential, physical limitations inevitably become more challenging with age.

Digital doubles allow veteran performers to take on physically demanding action roles without placing excessive strain on their bodies, enabling them to focus more on character development, emotional performance, and dialogue rather than enduring dangerous stunts.

Still, the technology has sparked important questions about its long-term impact.

Director Lee Seung Young has acknowledged that although AI can produce visually flawless images, it still struggles to recreate the raw atmosphere of a live film set the sweat, dust, tension, and subtle human energy that naturally emerge during production. Human artists were still required to carefully refine the AI-generated footage in post-production, and communication with AI tools can remain imperfect, with unintended visual changes sometimes occurring during revisions.

Beyond technical limitations lies an even bigger philosophical question: Will human actors always be necessary?

As AI continues to evolve, some worry that future productions could simply license an actor’s face and voice before generating an entire film virtually. At a time when artificial intelligence is reshaping industries worldwide, the entertainment business is increasingly being forced to ask what uniquely human qualities actors alone can continue to offer.

Ultimately, Agent Kim Reactivated demonstrates that AI does not have to replace artists it can become a powerful creative partner.

By combining So Ji Sub’s performance with cutting-edge Korean AI technology, the production reportedly reduced costs by around 60% while delivering cinematic-scale action rarely seen on television. The drama offers a glimpse into a future where human creativity and advanced technology work together, with digital doubles potentially becoming one of the driving forces behind the continued global expansion of Korean dramas.

Sources: Naver