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What is Wendigo and explain in detail?
Wendigo () is a mythological creature or evil spirit originating from the folklore of Plains and Great Lakes Natives as well as some First Nations. It is based in and around the East Coast forests of Canada, the Great Plains region of the United States, and the Great Lakes region of the United States and Canada, grouped in modern ethnology as speakers of Algonquian-family languages. The wendigo is often said to be a malevolent spirit, sometimes depicted as a creature with human-like characteristics, which possesses human beings. The wendigo is said to invoke feelings of insatiable greed/hunger, the desire to cannibalize other humans, and the propensity to commit murder in those that fall under its influence.In some representations the wendigo is described as a giant humanoid with a heart of ice; a foul stench or sudden, unseasonable chill might precede its approach. Possibly because of longtime identification by Europeans with their own superstitions about werewolves, for example as mentioned in The Jesuit Relations below, Hollywood film representations often label human/beast hybrids featuring antlers or horns with the "wendigo" name, but such animal features do not appear in the original indigenous stories.In modern psychiatry the wendigo lends its name to a form of psychosis known as "Wendigo psychosis", which is characterized by symptoms such as an intense craving for human flesh and an intense fear of becoming a cannibal. Wendigo psychosis is described as a culture-bound syndrome. In some First Nations communities other symptoms such as insatiable greed and destruction of the environment are also thought to be symptoms of Wendigo psychosis.

Etymology
The word appears in many Native American languages, and has many alternative translations. The source of the English word is the Ojibwe word wiindigoo. In the Cree language it is wīhtikow, also transliterated wetiko. Other transliterations include Wiindigoo, Weendigo, Windego, Wiindgoo, Windgo, Windago, Windiga, Wendego, Windagoo, Widjigo, Wiijigoo, Wijigo, Weejigo, Wìdjigò, Wintigo, Wentigo, Wehndigo, Wentiko, Windgoe, Wītikō, and Wintsigo.
A plural form windigoag is also spelled windegoag, wiindigooag, or windikouk.The Proto-Algonquian term has been reconstructed as *wi·nteko·wa, which may have meant "owl".

Parallels
The Wechuge is a similar being that appears in the legends of the Athabaskan people of the Northwest Pacific Coast. It too is cannibalistic; however, it is characterized as enlightened with ancestral insights.

Folklore
Description
The wendigo is part of the traditional belief system of a number of Algonquin-speaking peoples, including the Ojibwe, the Saulteaux, the Cree, the Naskapi, and the Innu. Although descriptions can vary somewhat, common to all these cultures is the view that the wendigo is a malevolent, cannibalistic, supernatural being. They were strongly associated with winter, the north, coldness, famine, and starvation.Basil H. Johnston, an Ojibwe teacher and scholar from Ontario, gives a description of a wendigo:

The Wendigo was gaunt to the point of emaciation, its desiccated skin pulled tightly over its bones. With its bones pushing out against its skin, its complexion the ash-gray of death, and its eyes pushed back deep into their sockets, the Wendigo looked like a gaunt skeleton recently disinterred from the grave. What lips it had were tattered and bloody ... Unclean and suffering from suppuration of the flesh, the Wendigo gave off a strange and eerie odor of decay and decomposition, of death and corruption.
In Ojibwe, Eastern Cree, Westmain Swampy Cree, Naskapi, and Innu lore, wendigos are often described as giants that are many times larger than human beings, a characteristic absent from myths in other Algonquian cultures. Whenever a wendigo ate another person, it would grow in proportion to the meal it had just eaten, so it could never be full. Therefore, wendigos are portrayed as simultaneously gluttonous and extremely thin due to starvation.
The wendigo is seen as the embodiment of gluttony, greed, and excess: never satisfied after killing and consuming one person, they are constantly searching for new victims.
A wendigo need not lose the humans powers of cognition or speech and in some depictions may clearly communicate with its prospective victims or even threaten or taunt them. A specimen of folk story collected in the early 20th century by Lottie Chicogquaw Marsden, an ethnographer of the Chippewas of Rama First Nation, in which a wendigo also exhibits tool use, an ability to survive partial dismemberment, and autocannibalism, reads:One time long ago a big Windigo stole an Indian boy, but the boy was too thin, so the Windigo didnt eat him up right away, but he travelled with the Indian boy waiting for him till hed get fat. The Windigo had a knife and hed cut the boy on the hand to see if he was fat enough to eat, but the boy didnt get fat. They travelled too much. One day they came to an Indian village and the Windigo sent the boy to the Indian village to get some things for him to eat. He just gave the boy so much time to go there and back. The boy told the Indians that the Windigo was near them, and showed them his hand where the Windigo cut him to see if he was fat enough to eat. They heard the Windigo calling the boy. He said to the boy "Hurry up. Dont tell lies to those Indians." All of these Indians went to where the Windigo was and cut off his legs. They went back again to see if he was dead. He wasnt dead. He was eating the juice (marrow) from the inside of the bones of his legs that were cut off. The Indians asked the Windigo if there was any fat on them. He said, "You bet there is, I have eaten lots of Indians, no wonder they are fat." The Indians then killed him and cut him to pieces. The end of this Giant Windigo.

Human cannibalism
In some traditions, humans overpowered by greed could turn into wendigos; the myth thus served as a method of encouraging cooperation and moderation. Other sources say wendigos were created when a human resorted to cannibalism to survive. Humans could also turn into wendigos by being in contact with them for too long.

Taboo reinforcement ceremony
Among the Assiniboine, the Cree, and the Ojibwe, a satirical ceremonial dance is sometimes performed during times of famine to reinforce the seriousness of the wendigo taboo. The ceremony, known as wiindigookaanzhimowin, was performed during times of famine, and involved wearing masks and dancing backward around a drum. The last known wendigo ceremony conducted in the United States was at Lake Windigo of Star Island of Cass Lake, within the Leech Lake Indian Reservation in northern Minnesota.

Psychosis
In historical accounts of retroactively diagnosed Wendigo psychosis, it has been reported that humans became possessed by the wendigo spirit, after being in a situation of needing food and having no other choice besides cannibalism. In 1661, The Jesuit Relations reported:

Although in many recorded cases of Wendigo psychosis the individual has been killed to prevent cannibalism from resulting, some Cree folklore recommends treatment by ingestion of fatty animal meats or drinking animal grease; those treated may sometimes vomit ice as part of the curing process.One of the more famous cases of Wendigo psychosis reported involved a Plains Cree trapper from Alberta, named Swift Runner. During the winter of 1878, Swift Runner and his family were starving, and his eldest son died. Twenty-five miles away from emergency food supplies at a Hudsons Bay Company post, Swift Runner butchered and ate his wife and five remaining children. Given that he resorted to cannibalism so near to food supplies, and that he killed and consumed the remains of all those present, it was revealed that Swift Runners was not a case of pure cannibalism as a last resort to avoid starvation, but rather of a man with Wendigo psychosis. He eventually confessed and was executed by authorities at Fort Saskatchewan.Another well-known case involving Wendigo psychosis was that of Jack Fiddler, an Oji-Cree chief and medicine man known for his powers at defeating wendigos. In some cases, this entailed killing people with Wendigo psychosis. As a result, in 1907, Fiddler and his brother Joseph were arrested by the Canadian authorities for homicide. Jack committed suicide, but Joseph was tried and sentenced to life in prison. He ultimately was granted a pardon but died three days later in jail before receiving the news of this pardon.Fascination with Wendigo psychosis among Western ethnographers, psychologists, and anthropologists led to a hotly debated controversy in the 1980s over the historicity of this phenomenon. Some researchers argued that, essentially, Wendigo psychosis was a fabrication, the result of naïve anthropologists taking stories related to them at face value without observation. Others have pointed to a number of credible eyewitness accounts, both by Algonquians and others, as evidence that Wendigo psychosis was a factual historical phenomenon.The frequency of Wendigo psychosis cases decreased sharply in the 20th century as Boreal Algonquian people came into greater and greater contact with European ideologies and more sedentary, less rural, lifestyles.In his 2004 treatise Revenge of the Windigo on disorders and treatments of the behavioral health industry in the United States and Canada that are peculiar to indigenous people, James B. Waldram wrote,
...no actual cases of windigo psychosis have ever been studied, and Lou Maranos scathing critique in 1985 should have killed off the cannibal monster within the psychiatric annals. The windigo, however, continues to seek revenge for this attempted scholarly execution by periodically duping unsuspecting passers-by, like psychiatrists, into believing that windigo psychosis not only exists but that a psychiatrist could conceivably encounter a patient suffering from this disorder in his or her practice today! Windigo psychosis may well be the most perfect example of the construction of an Aboriginal mental disorder by the scholarly professions, and its persistence dramatically underscores how constructions of the Aboriginal by these professions have, like Frankensteins monster, taken on a life of their own.
The 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD) classifies "Windigo" as a culture-specific disorder, describing it as "Rare, historic accounts of cannibalistic obsession... Symptoms included depression, homicidal or suicidal thoughts, and a delusional, compulsive wish to eat human flesh... Some controversial new studies question the syndromes legitimacy, claiming cases were actually a product of hostile accusations invented to justify the victims ostracism or execution."

As a concept or metaphor
In addition to denoting a cannibalistic monster from certain traditional folklore, some Native Americans also understand the wendigo conceptually. As a concept, the wendigo can apply to any person, idea, or movement infected by a corrosive drive toward self-aggrandizing greed and excessive consumption, traits that sow disharmony and destruction if left unchecked. Ojibwe scholar Brady DeSanti asserts that the wendigo "can be understood as a marker indicating... a person... imbalanced both internally and toward the larger community of human and spiritual beings around them." Out of equilibrium and estranged by their communities, individuals thought to be afflicted by the wendigo spirit unravel and destroy the ecological balance around them. Chippewa author Louise Erdrichs novel The Round House, winner of the National Book Award, depicts a situation where an individual person becomes a wendigo. The novel describes its primary antagonist, a rapist whose violent crimes desecrate a sacred site, as a wendigo who must be killed because he threatens the reservations safety.
In addition to characterizing individual people who exhibit destructive tendencies, the wendigo can also describe movements and events with similarly negative effects. According to Professor Chris Schedler, the figure of the wendigo represents "consuming forms of exclusion and assimilation" through which groups dominate other groups." This application allows Native Americans to describe colonialism and its agents as wendigos since the process of colonialism ejected natives from their land and threw the natural world out of balance. DeSanti points to the 1999 horror film Ravenous as an illustration of this argument equating "the cannibal monster" to "American colonialism and manifest destiny". This movie features a character who articulates that expansion brings displacement and destruction as side effects, explaining that "manifest destiny" and "western expansion" will bring "thousands of gold-hungry Americans... over the mountains in search of new lives... This country is seeking to be whole... Stretching out its arms... and consuming all it can. And we merely follow".As a concept, wendigo can apply to situations other than some Native American-European relations. It can serve as a metaphor explaining any pattern of domination by which groups subjugate and dominate or violently destroy and displace. Joe Lockhard, English professor at Arizona State University, argues that wendigos are agents of "social cannibalism" who know "no provincial or national borders; all human cultures have been visited by shape-shifting wendigos. Their visitations speak to the inseparability of human experience... National identity is irrelevant to this borderless horror." Lockhards ideas explain that wendigos are an expression of a dark aspect of human nature: the drive toward greed, consumption, and disregard for other life in the pursuit of self-aggrandizement.
Romantic scholar and documentarian Emily Zarka, also a professor at Arizona State University, observes that two commonalities among the indigenous cultures of Algonquian language family speakers are that they are situated in climes where harsh winters are frequent and may be accompanied by starvation.  She states that the wendigo symbolically represents three major concepts: it is the incarnation of winter, the embodiment of hunger, and the personification of selfishness.

In popular culture
Although distinct from how it appears in the traditional lore, one of the first appearances of a character inspired by, or named after, a wendigo in non-Indigenous literature is Algernon Blackwoods 1910 novella The Wendigo. Joe Nazare wrote that Blackwoods "subtly-demonizing rhetoric transforms the Wendigo from a native myth into a descriptive template for the Indian savage."Blackwoods work has influenced many of the subsequent portrayals in mainstream horror fiction, such as August Derleths "The Thing that Walked on the Wind" and "Ithaqua" (1933 and 1941), which in turn inspired the character in Stephen Kings novel Pet Sematary, where it is a personification of evil, an ugly grinning creature with yellow-grey eyes, ears replaced by rams horns, white vapor coming from its nostrils, and a pointed, decaying yellow tongue. These works set the template for later portrayals in popular culture, at times even replacing the Native American lore. In an early short story by Thomas Pynchon, "Mortality and Mercy in Vienna" (first published in 1959), the plot centers around a character developing Wendigo syndrome and going on a killing spree.
A character inspired by the wendigo appears in American comic books published by Marvel Comics. Created by the writer Steve Englehart and artist Herb Trimpe, the monster is the result of a curse that afflicts those who commit acts of cannibalism. It first appeared in The Incredible Hulk #162 (April 1973), and again in the October 1974 issue.Without explicitly using the term, the 1995 novel Solar Storms by Chickasaw author and poet Linda K. Hogan both explored the mythology of the wendigo and used the creatures as a device to interrogate issues of independence, spirituality, and politics, an individuals relationship to the family, and as a metaphor for corporate voracity, exploitation, and power viewed as a form of cannibalism.

Other creatures based on the legend, or named for it, appear in various films and television shows, including Dark Was the Night and Ravenous. Television series include Teen Wolf, Supernatural, Blood Ties, Charmed, Grimm, and Hannibal, where an FBI profiler has recurring dreams or visions of a wendigo that symbolizes the titular cannibalistic serial killer. A wendigo appears in My Little Pony: Friendship Is Magic "Hearths Warming Eve" under the pun title of "Windigo", and in the DuckTales Christmas special, "Last Christmas!", in which the creatures are described as "poor souls turned into monsters by obsession and desperation." A wendigo also appears in the 2020 horror film The Retreat.The 2015 horror survival video game Until Dawn by Supermassive Games features wendigos as the main antagonists. Wrist, the 2016 debut novel by Canadian horror fiction writer Nathan Niigan Noodin Adler, was based on the story of the wendigo.The 2015 series Summoner by Taran Matharu featured a type of demon known as a Wendigo.In the 2018 role-playing game Fallout 76 by Bethesda Game Studios, wendigos are featured as one of the cryptid enemies found in the area of Appalachia; mutated from people who consumed human flesh in isolation.In the 2018 first-person shooter video game Dusk, wendigos are featured as strong enemies that remain invisible to the player until they receive damage. Several of these creatures also appear in the games cover art.In the 2021 film Antlers by Scott Cooper, Frank, Lucas father, transforms into a wendigo, which is portrayed as a deer-like creature with a glowing heart that moves from person to person with a never ending hunger. Guillermo del Toro, producer of the film, developed the wendigo on the basis that the more the creature eats, the more it gets hungry and the more it gets hungry, the weaker it becomes.

References
Citations
General and cited sources
Brightman, Robert A. (1988). "The Windigo in the Material World" (PDF). Ethnohistory. 35 (4): 337–379. doi:10.2307/482140. JSTOR 482140. Archived from the original (PDF) on April 8, 2019.
Colombo, J.R. ed. Wendigo. Western Producer Prairie Books, Saskatoon: 1982.
Goddard, Ives (1969). "Owls and Cannibals: Two Algonquian Etymologies". Paper Presented at the Second Algonquian Conference, St. Johns, Newfoundland.
Johnston, Basil (1990) [1976]. Ojibway Heritage. Lincoln: University of Nebraska Press.
Johnston, Basil (2001) [1995]. The Manitous. St. Paul: Minnesota Historical Society Press.
Marano, Lou (1982). "Windigo Psychosis: The Anatomy of an Emic-Etic Confusion". Current Anthropology. 23: 385–412. doi:10.1086/202868. S2CID 147398948.
Parker, Seymour (1960). "The Wiitiko Psychosis in the Context of Ojibwa Personality and Culture". American Anthropologist