The aswang is the most famous creature of Philippine folklore, a shape-shifting predator that looks like an ordinary neighbor by day and hunts by night. It is less a single monster than a family of related beings: blood-drinkers, flesh-eating ghouls, animal shape-shifters, witches and the self-dividing manananggal. The belief is especially associated with the Visayas, and above all the province of Capiz on Panay.[1][2]
| Name | Aswang; related forms in Cebuano, Tagalog and other Philippine languages |
|---|---|
| Type | Shape-shifting predator of Philippine folklore; a family of beings |
| Region | Philippines, especially the Visayas (Capiz, Panay, Negros) |
| Earliest written record | Fr. Juan de Plasencia, 1589 (“osuang”) |
| Key scholar | Maximo D. Ramos (1960s–1970s) |
| Traditional protections | Salt, ash, spices, vinegar, holy objects, stingray tails, sharp sticks under the floor |
The word
Aswang comes from an old Central Philippine word meaning something like “vampire,” “evil spirit” or “witch,” with relatives in several Philippine languages. It may also be the source of the word suangi, used for witches in eastern Indonesia.[1]
The earliest record: Plasencia, 1589
The first written description comes from the Franciscan friar Juan de Plasencia, whose 1589 account Customs of the Tagalogs lists the kinds of “priests of the devil” he encountered. The eighth is the osuang, a word he says is equivalent to “sorcerer.” People claimed to have seen the osuang fly, and said that it killed people and ate their flesh. Plasencia noted that this belief was found in the Visayan Islands and not among the Tagalogs.[1][3]
From its first appearance in writing, then, the aswang was a Visayan figure, and it remains most strongly associated with that region today.
Ramos and the “aswang complex”
The folklorist Maximo D. Ramos made the aswang the subject of serious study in the 1960s and 1970s. He argued that the word covers five kinds of creature, which roughly parallel monsters of other cultures:[1][4][5]
- The vampire, which drinks blood, often appearing as a beautiful person.
- The viscera sucker, such as the manananggal, which separates its upper body and flies to feed on internal organs or on unborn children through a long, thin tongue.
- The weredog, an animal shape-shifter. Ramos noted that the Philippines has no wolves, so the shape-shifter takes the form of a dog, pig or other local animal.
- The witch, who causes illness through magic or the evil eye.
- The ghoul, which feeds on corpses and was feared at wakes and funerals.
Ramos also traced some living customs, such as not sweeping during a wake, to older practices meant to protect the dead from ghouls.[6]
Protections
Folklore records a long list of protections against aswang, including salt, ash, spices and vinegar, holy objects, stingray tails, betel nut, and sharp sticks or bolos set into the bamboo floor. Some households kept a special oil said to boil when an aswang came near.[1][7]
The aswang in the Cold War
The legend once became a weapon. During the Huk Rebellion of the early 1950s, American intelligence officers working with the Philippine army, reportedly including Colonel Edward Lansdale, spread rumors that an aswang was stalking the hills. According to accounts of the operation, a dead Huk fighter’s body was punctured, drained of blood and left on a trail to suggest an aswang attack and frighten insurgents out of the area.[1][8]
The main source for the story is Lansdale himself. In his 1972 memoir, In the Midst of Wars, he described the operation in detail and claimed it worked: the Huk unit pulled out of the area, convinced that an aswang had killed their comrade. Historians and folklorists have been more cautious. The operation took place in central Luzon, a Tagalog and Kapampangan region where, as Plasencia noted four centuries earlier, the aswang was not traditionally at home. The folklore researcher Jordan Clark has questioned whether the vampire version of the aswang would even have been familiar to the guerrillas. It is just as likely that the Huks fled because they had found a mutilated body and knew government forces were nearby. Whatever its real effect, the episode has become a famous example of folklore used as a weapon.[9]
Understanding the aswang
- An inversion of social values. The anthropologist Raul Pertierra argued that the aswang reverses ideal values such as loyalty to kin and modesty, making it a portrait of everything a good neighbor should not be.[7]
- Explaining tragedy. Miscarriages, infant deaths and sudden illness could be blamed on a hidden enemy within the community.
- Real harm. Accusations have caused real suffering. On Panay, people with X-linked dystonia parkinsonism, a genetic movement disorder common in the region, have been labeled aswang and shunned, which can keep families from seeking medical care.[1]
When folklore meets a genetic disease
One of the saddest modern stories connected to the aswang concerns a rare neurological disorder. X-linked dystonia-parkinsonism, known locally as lubag (a Hiligaynon word for twisting movement), is found almost only among people with roots on Panay, and especially in Capiz, the province most associated with the aswang. It affects mostly men, usually starting in their thirties or forties, with twisting, involuntary movements followed by the stiffness and slowness of parkinsonism. In Capiz it affects up to about one in 4,000 men, compared with roughly one in 322,000 people across the Philippines.[10]
Doctors at the Philippine General Hospital first noticed a cluster of cases in the 1970s, and the first epidemiological survey was published in 1976. Geneticists later traced the disease to a single change in the TAF1 gene on the X chromosome, caused by an inserted stretch of “jumping” DNA called an SVA retrotransposon. The mutation appears to have entered the local population more than 2,000 years ago.[10][11]
Because the abnormal postures and movements can look like the contortions attributed to aswang, some patients and families have been stigmatized as aswang. That stigma can push families to hide sick relatives rather than seek medical care. It is a stark example of how a folk explanation for misfortune can turn real suffering into suspicion.[1][10]
The aswang as a metaphor
Filipino artists have long used the aswang to talk about real-world fear. The most striking recent example is Aswang (2019), a documentary by Alyx Ayn Arumpac about the killings carried out during the Philippine government’s “war on drugs” in Manila. It premiered at the International Documentary Film Festival Amsterdam, where it won the FIPRESCI critics’ prize, and it was described as the first feature documentary on the drug war directed by a Filipino. The title draws on the oldest meaning of the legend: a predator that comes at night and turns ordinary neighborhoods into places of dread.[12]
Today the aswang is also a fixture of Philippine film, comics and tourism. For the self-dividing form, see our entry on the Manananggal.
References
- “Aswang,” Wikipedia, citing Blust and Trussel’s Austronesian Comparative Dictionary, M. L. Tan (2008), E. Thomas (1996), S. Anderson (2020), A. Ocampo (2010) and The Aswang Project.
- “The truth about the aswang in Capiz,” The Aswang Project.
- Juan de Plasencia, “Customs of the Tagalogs” (1589), in E. H. Blair and J. A. Robertson (eds.), The Philippine Islands, 1493–1898, vol. 7 (Cleveland, 1903). Wikisource.
- Maximo D. Ramos, “The Aswang Syncrasy in Philippine Folklore,” Western Folklore 28, no. 4 (1969): 238–248.
- Maximo D. Ramos, Creatures of Philippine Lower Mythology (Quezon City: University of the Philippines Press, 1971).
- Maximo D. Ramos, “Belief in Ghouls in Contemporary Philippine Society,” Western Folklore 27, no. 3 (1968): 184–190.
- Raul Pertierra, “Viscera-Suckers and Female Sociality,” Philippine Studies 31, no. 3 (1983).
- Evan Thomas, The Very Best Men (1996), p. 57; Scott Anderson, The Quiet Americans (2020), pp. 275–276.
- Edward G. Lansdale, In the Midst of Wars: An American’s Mission to Southeast Asia (New York: Harper & Row, 1972); discussed in “False Fang: When the CIA Staged a Vampire Attack,” Mental Floss.
- “X-linked dystonia parkinsonism,” Wikipedia; see also MedlinePlus Genetics, US National Library of Medicine.
- T. Aneichyk et al., “Dissecting the causal mechanism of X-linked dystonia-parkinsonism by integrating genome and transcriptome assembly,” Cell 172 (2018): 897–909.
- “Aswang wins FIPRESCI Award at IDFA,” LevelK (20 December 2019).
Correction note (October 2026): This entry was rewritten from historical and folklore sources, replacing an earlier general description. The illustration above is an artistic impression.