Twenty years after its release, Bong Joon-ho is reflecting on his seminal sci-fi thriller, The Host. The film, which is celebrating its anniversary with a 4K remaster and a return to theaters, began with a peculiar childhood memory: the director recounting seeing a creature in Seoul's Han River during his youth. Bong revealed in a 2006 interview that this vision was inspired by the pressures of high school and a fascination with the Loch Ness Monster.

"Attending high school comes with a lot of pressure," Bong told Polygon. "So that's maybe what led to that kind of a delusion." He elaborated that while living near the Han River, his imagination combined with his interest in the Loch Ness Monster to form the basis of the film's central antagonist.

The 4K Remaster and Inspirations

The new 4K version of The Host aims to recapture the experience of viewing a high-quality 35mm print on release day, according to Bong. He stated that no specific digital touch-ups were made to the creature effects, maintaining the original vision.

The genesis of the monster was rooted in a combination of real-world events and fictional influences. The film's inciting incident, where a doctor orders the dumping of formaldehyde into the Han River, is based on the actual McFarland Incident of 2000 in Korea. Bong described the environmental protests surrounding this event as feeling like the start of a horror film.

Another significant inspiration was the 1980s American monster movie Alligator, which features a chemical experiment leading to a sewer-dwelling alligator's monstrous transformation. Bong also clarified that while he enjoyed the Godzilla films, his monster was intended to be more grounded and less destructive, citing Ridley Scott's Alien and John Carpenter's The Thing as more direct influences due to their focus on smaller, more menacing creatures.

A Return to Horror and Future Projects

While The Host is known for its monster elements, Bong has not explicitly returned to the horror genre since. However, he indicated that he is currently developing two horror-thriller concepts among five more specific film ideas. His next project, an animated feature titled Ally, will feature a character that resembles a "a very funny monster," though it is not a horror film.

Filming the Climax

Bong recalled the filming of The Host's climactic final scene with a mix of embarrassment and creative satisfaction. Shot on location at a real riverbank, the scene involved the actors interacting with an unseen monster. "Song Kang-ho was already a huge superstar in Korea at the time, and he was screaming and doing these crazy things and people were watching and wondering like, 'What the hell is he doing?'" Bong said, noting the awkwardness of performing without visual effects present.

Due to a limited VFX budget, Bong had to be judicious in showing the monster, using only seven shots of the creature in the sequence. This constraint forced him to creatively convey the monster's presence and terror through other means, a challenge he believes ultimately led to more inventive filmmaking. The Host returns to theaters on November 20, 2026.