By the end of its first 91 days on Netflix, KPop Demon Hunters had passed 325 million views, which at that point made it the most-watched title the service had recorded. Odds are you remember the magpie in the tiny black hat, the one Jinu says he made for the tiger before the bird took it. No major plot spoilers below, by the way.
That tiger-and-magpie duo and the boy band's black-hat look both come out of Korean tradition, and the originals are a lot older and stranger than the film lets on. I'm going to start with the source material and get to the changes afterward, because they read better once you've seen what got changed.
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| A tiger and a magpie under a pine branch: the pairing Korean folk painters returned to for centuries. |
The Oldest Tiger and Magpie Painting in Korea Dates to 1592
Korean painters have paired a tiger and a magpie for centuries, in a genre called hojakdo (호작도), also known as kkachi horangi (까치호랑이), which literally means magpie tiger. Korea's oldest surviving example is a silk painting dated to 1592, and Seoul's Leeum Museum of Art showed it in Korea for the first time in 2025.
That first painting is a formal piece, and the museum hung it beside looser 19th-century folk versions for contrast. A magpie sits in a tree above a tiger and its cubs. Scholars trace the pairing back to China's Yuan dynasty, and the museum says this work shows the image turning Korean, partly by putting the bird up in a tree.
The goofy tiger came later. In minhwa, the folk painting that flourished in the later centuries of the Joseon dynasty (1392 to 1910), painters gave the tiger bulging eyes and a lolling tongue and used it to caricature the yangban aristocracy. The magpie, quick and clever, stood for ordinary people. Tigers were also believed to guard a household against evil and magpies to bring good news, so one painting could work as a lucky charm and a jab at people in power at the same time.
Accounts differ on exactly when the tiger turned silly, somewhere between the 17th century and late Joseon, so I'm leaving that date loose. What the sources agree on is the pairing: a bumbling tiger, a sharp magpie, usually a pine tree.
What the Film Did to the Tiger and the Magpie
Derpy and Sussie, as the filmmakers named them, keep the odd-couple setup and get rebuilt around it. They belong to Jinu, the Saja Boys' leader, and carry messages between him and Rumi. Derpy has bright blue fur, Sussie has six eyes, and director Maggie Kang has said the animals live between two worlds, with their nature left mysterious.
Their old personalities survive intact. Derpy is a lovable dope and Sussie is the sharp one, the same split minhwa painters drew. Best of all is the hat gag. A gat is a Joseon scholar's hat, the tiger in the paintings stands for the ruling class, and in the film the magpie keeps taking the hat Jinu made for the tiger. Korea Times writer Park Han-sol called it an affectionate nod to the old visual joke, and that's how it reads to me too.
What I couldn't find is any sign that the film keeps the political point. Derpy is a pet and a courier, and no interview I found has the makers saying the old satire is part of the plan. That's a sensible change for a story about idols and shame, though it shrinks the satire to a wink for viewers who already know the code.
Tigers turn up somewhere else in the film, and it's easy to miss. Rumi's weapon is a saingeom (사인검), a name that translates as sword of four tigers. Art director Celine DaHyeu Kim says the real ceremonial blade was made only when the year, month, day and hour all fell under the tiger sign. JoongAng Daily adds that shamans often used it in rituals, on the belief that a tiger's courage frightens off ghosts.
Meet the Jeoseung Saja Behind the Saja Boys
The Saja Boys take their look and half of their name from the jeoseung saja (저승사자), Korea's messengers of the afterlife. In folklore their job is escort duty: they guide the souls of the newly dead to the underworld, under the command of King Yeomna, its ruler. Charon the ferryman is a closer Western match than the hooded figure with a scythe, and the whole arrangement sounds more like a clerk delivering a summons than a killer on a mission.
Folk craft gave the reaper a face too. The National Folk Museum of Korea holds a kokdu, a small wooden figure placed on a funeral bier as decoration, carved in the shape of a jeoseung saja.
Black hanbok and a black hat are more of a television inheritance. According to the Korea Times, KBS's anthology series Korean Ghost Stories, which aired through the 1970s and 80s, cemented the reaper in that outfit. Later dramas occasionally swapped the robes for sleek black suits, as in Guardian: The Lonely and Great God (2016) and Tomorrow (2022). When the Saja Boys perform "Your Idol" in black hanbok and horsehair hats, they're quoting a screen look roughly half a century old, resting on beliefs far older.
Kang has said the reaper idea was among the film's earliest concepts, and she describes the boys' design as sliding from bubble gum pop toward the full reaper look as the story darkens. That slide is the film's own touch.
The job is where the movie changes things. In folklore, a reaper delivers souls. In the film, the boys gather fans whose souls end up feeding the demon king Gwi-Ma. The name carries a second meaning as well: saja also means lion in Korean, which is why the group's logo is a lion head and its fandom is called the Pride.
A Black Horsehair Hat Marked a Joseon Scholar
The gat (갓), a wide-brimmed black hat made of horsehair, marked a noble scholar in the Joseon era and stood for dignity and the Confucian scholar's ideal. It appears on both the Saja Boys and the magpie, so one object carries two moods in a single film. Making these hats is a craft with official standing: horsehair hat-making, called gannil, is a designated National Intangible Cultural Heritage.
On the Saja Boys, the hat comes with the television reaper look. On the magpie, it sits on a bird that speaks for ordinary people in the old paintings. Read it that way and a magpie that keeps snatching the tiger's hat is doing some quiet class comedy.
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| The gat marked a Joseon scholar's rank. Television later handed the same look to the reapers. |
Smaller Borrowings From the Palace and the Shaman's Ritual
Beyond the animals and the reapers, the film borrows its central idea from shamanism and dresses its stages in palace symbolism. Kang has said she built the film on Korean mythology and shamanism, and that when the team developed the hunters' history they leaned into the way Korean shaman women used song and dance in their rituals.
The ritual in question is the gut, in which a shaman sings and dances, often holding a sword, bell or fan, to reach the divine and drive off evil spirits. Kang told an interviewer the gut could be seen as "the early version of a concert." Put a hunter trio on a stage, let their singing hold a barrier against demons, and you have the movie's premise.
Palace imagery shows up too. When Huntrix performs "Golden" at the Idol Awards, the stage is framed by a backdrop that evokes the irworobongdo (일월오봉도), the folding screen that stood behind the king's throne in Joseon palaces, painted with the sun, the moon, five jagged peaks and clusters of pine. Pop stars end up standing in front of the screen once reserved for royalty.
Huntrix's fashion mixes norigae, traditional decorative pendants, with modern K-pop styling, according to the Korea Times. As for the barrier called the Honmoon and the demon king Gwi-Ma, I couldn't trace either to a specific older source, so I'm treating them as the filmmakers' own invention.
Seeing the Originals for Yourself
The National Museum of Korea and the National Folk Museum of Korea are the two obvious places to look for originals. The Korea Times pictured hojakdo paintings from the first and a jeoseung saja kokdu from the second. Leeum's tiger and magpie show, with the 1592 painting, opened in September 2025 and by every schedule I found closed no later than January 2026.
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| Tigers and magpies also decorated everyday objects such as paper fans, and folk paintings were hung to bring luck. |
The film has already changed how busy those places are. The National Museum of Korea said its heritage-inspired merchandise hit a record 11.5 billion won in the first half of 2025, with about 260,000 daily visitors browsing its online store, MU:DS. Enamel pins of the tiger and magpie, keychains and pens topped with tiny gats were all on the shelves.
One caution before you plan a trip around this: I haven't confirmed what is on display in either museum right now, and displays rotate. Check the exhibition pages first, then look through each museum's online collection for hojakdo and kokdu.
After that, run the easy experiment. Pause the film on the magpie in its tiny hat, pull up a tiger-and-magpie painting next to it, and count how many jokes the two frames share.
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