The evil chicken (“pollo maligno”) is an evil spirit of the forest of Colombian folklore in the form of a bird that haunts the hunters, attracting them to the deepest forest in order to devour them.
That's beautiful and hilarious. A penanggalan would have been cool too, and I was expecting one too after seeing the Fetus monster for letter T (I think they are of the same folklore).
At any rate, this is really nice. Keep it up!