This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Chenoo (Mi'kmaq/Algonquian)
Chenoo are generally described as larger than the average man, getting bigger the hungrier they are. They have sharp fangs which stand out due to their lips having been chewed off. Chenoo used to be human, being corrupted by dark magic and cursed to eat people's flesh. Their bodies become excruciatingly warm, forcing them to live out in the snow. Most stories take the point of view of the Chenoo rather than the humans.
It was like a haggard old man, with wolfish eyes; he was stark naked; his shoulders and lips were gnawed away, as if, mad with hunger, he had eaten his own flesh". There are a few ways to kill a Chenoo, usually requiring doing so more than once. There is no way of destroying the Chenoo except by destroying their icy heart, either by tricking them into eating salt or forcing them into eating so much that they throw it up.