Android
Most AI-generated videos today have already solved one problem: they can create realistic-looking people. But realism alone is no longer enough. As audiences become increasingly familiar with AI-generated content, what separates a convincing film from a technically impressive demo is no longer image quality. It is whether the character on screen feels alive.
This question sits at the heart of L'Ultimo Uomo Reale, the Cannes Lions-winning campaign created by Lipstick for luxury resale platform The RealReal. The film begins in a world that appears entirely real, before subtle glitches emerge and reality gradually falls apart. In the final reveal, audiences discover that nearly everything they have seen—including the protagonist—was AI-generated. The only real object throughout the film is The RealReal handbag.
For the final reveal to work, the AI-generated world had to feel convincingly real at first. Achieving that level of credibility required more than photorealistic visuals. It demanded believable performances, stable characters and cinematic consistency throughout the entire film. These were the creative challenges Kling helped solve.
Believable performances, not just realistic faces
One of the most striking observations from the behind-the-scenes video is director Sebastian Strasser's distinction between realism and performance. "You don't believe a face because of high resolution. You believe it because of great acting." In other words, creating a convincing digital human is not simply about reproducing skin texture or facial detail. What ultimately persuades an audience is the subtle choreography of expressions: a glance held half a second longer, the rhythm of a smile, or the almost imperceptible movement around the eyes.
Throughout L'Ultimo Uomo Reale, Kling AI helped preserve these nuanced performances across every shot. Rather than producing expressions that felt generic or disconnected, the model maintained the emotional continuity of the protagonist, Vincent, allowing his reactions to unfold naturally as the narrative progressed. As the film gradually shifts from realism into increasingly surreal scenarios, the audience continues to follow the character emotionally instead of questioning whether the performance itself is AI-generated.
One character, one identity
Performance alone, however, is only part of the equation. Feature-quality storytelling requires viewers to recognize and trust a character across dozens of shots, changing camera angles and dramatically different environments. Even minor inconsistencies in facial structure, expression or overall presence can immediately break immersion.
For Lipstick, maintaining a stable protagonist throughout the film was essential. From intimate close-ups to expansive stadium scenes, the character needed to remain unmistakably the same person—not only in appearance, but in presence. Kling preserved that identity consistently across the production, enabling the creative team to move freely between locations, compositions and visual styles.
Maintaining cinematic control at scale
As the narrative expands beyond reality, the visual complexity of each scene increases significantly. Complex environments, epic wide shots, and multiple moving elements all place greater demands on generative models, where small inconsistencies can quickly become noticeable across an entire image.
According to the Lipstick team, this was another area where Kling AI proved critical. Instead of maintaining quality only in isolated subjects, Kling AI preserved composition, lighting, texture and spatial relationships across the full frame. Even in the film's most ambitious sequences, where surreal imagery unfolds within large cinematic environments, visual coherence remained intact. This level of stability allowed the filmmakers to pursue scenes that previously would have required either extensive manual correction or would simply have been considered impractical for AI generation.
A New Way of Filmmaking
The success of L'Ultimo Uomo Reale demonstrates a broader shift in AI filmmaking. As technology matures, audiences are no longer impressed simply because realistic images are generated by AI. Instead, they respond to films that sustain believable performances, coherent visual language and directorial intent from beginning to end. What makes L'Ultimo Uomo Reale even more compelling is that it uses AI not merely as a production tool, but as an integral part of its creative idea. Released as an April Fools' campaign for The RealReal, the film cleverly uses AI-generated illusion to highlight the brand's promise of authenticity.
In the behind-the-scenes video, Strasser concludes with a phrase that encapsulates this evolution: "That's not AI. That's directed technology." Rather than replacing creative decision-making, Kling AI enabled the team to retain control over creative execution and cinematic storytelling, allowing AI to function not as the author of the film, but as a creative partner capable of faithfully executing a director's vision. That, ultimately, is what made L'Ultimo Uomo Reale not only an AI-generated film, but an award-winning piece of filmmaking.
