A census taker once tried to test me. I ate his liver with some fava beans and a nice chianti.
~ Hannibal Lecter
A person or animal that eats something that is the same species as he, she, or it is. The circumstances that turned a villain into a cannibal vary, ranging from a mental illness to mutation that altered his, her, or its diet. Cannibals are often depicted as being particularly depraved, due to simply devouring a member of his, her, or its own species.

Editing note: not to be confused with Man-Eaters who are non-human villains who eat humans. Also, do not add animals who eat other, different animals (like a T-Rex eating a Triceratops or a hawk eating a chicken), no matter how anthropomorphic they may be. The latter should go under  Predators instead because the animals are still different species.