Chwiak

Lore

The name “Chwiak” (취악) comes from the characters 취 (chwi, “to stink”) and 악 (ak, “evil”) and can be rendered as “vile stench.”

You’re most likely to encounter this creature near mountain Buddhist temples, especially on dark nights. When Chwiak appears, the air fills with a sickening odor. Its eyes bulge, its nose is scrunched, the corners of its mouth stretch back to its ears, its ears droop, and its hair stands on end. The body is a mottled blue-red, and it has leathery, webbed wings that look menacing when spread. Despite the grotesque look, Chwiak is neither violent nor particularly dangerous.

The blue-red coloring and wings are probably symbolic. Blue and red can allude to yin and yang, hinting at a chaotic, dual nature. Chwiak’s wings aren’t for sustained flight; they let it dart about in quick bursts—more like a foul breeze than a soaring bird.

Its habit of lurking “around temples and pagodas” is key. Buddhist temples are spaces of purification and enlightenment. A being literally named “evil stench” stands in direct contrast to the incense and cleanliness of those grounds. Rather than a malicious demon, Chwiak serves as a living reminder to monks that even the holiest places are never entirely free of worldly filth, sin, and attachment. Its arrival can be seen as a test of spiritual purity.

Chwiak may also tie into the concept of agwi (아귀), the “hungry ghosts” of Buddhist lore. Monks leave offerings to ease these spirits’ suffering. If Chwiak is born of decay and refuse, it might hover near temples to feed on those offerings.

Behavior-wise, Chwiak acts like a cat: it stays perfectly still until you move, then scampers away the moment it’s noticed. Korean folklore is full of such creatures—terrifying to look at, but skittish. Its strength isn’t in attacking; it’s in creating a disgust so strong that people drive it off themselves. The cat-like stillness is just another way to avoid conflict.