Wendigo is a mythological creature or evil spirit that is said to invoke feelings of insatiable greed and hunger and they have a strong desire to cannibalize other humans.  Descriptions of the Wendigo will vary, but they are typically associated with winter and famine.  When they eat another person, they grow in proportion to that meal, so they can never be satisfied.

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RESOURCES:

• Wendigo - Wikipedia
• The case of a real wendigo – Monstrous.com
• How to Escape or Kill a Wendigo - How Wendigoes Work | HowStuffWorks
• Wendigo Psychosis | Time Is The Substance I am made of, Erebus Dejected Demon, and Mind Space Apocalypse - Academia.edu
• The Terrifying Tale Of Swift Runner And The Wendigo - KnowledgeNuts
• Jack Fiddler - The Last Wendigo Hunter (anomalien.com)
• The Legend Of Jack Fiddler, Wendigo Killer | Light Force Network
• The Strange Case of the Last Wendigo Hunter (mysteriousuniverse.org)
• History of Wendigoes - How Wendigoes Work | HowStuffWorks
• Classroom Cannibal_ Teaching Ojibwe Spirituality Using the Windigo (1).pdf
• Wendigo: Cannibal Beast of Native American Legend - Historic Mysteries
• "In Search of Monsters" The Wendigo (TV Episode 2019) - IMDb
• Wendigo Psychosis | Time Is The Substance I am made of, Erebus Dejected Demon, and Mind Space Apocalypse - Academia.edu