Vok'sha
The Vok'sha were a species native to the planet Rakella Prime.

Their mythology included the belief that "hate" was a beast that lived inside the stomach. Their greatest mythical hero was a man who ate s for twenty-three days to kill the beast and subsequently became a saint. 

In 2371, while discussing demons in various species' mythology, Chakotay mentioned this to Tuvok. ()

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Species