There’s a marine isopod parasite that with crawl inside a fish’s mouth, eat the fish’s tongue, and then sit down where the tongue should be and •let the fish use it as its tongue•, taking a cut of everything the fish eats. The fish is not thrilled about this, of course, but if it kicks out the parasite, it will die.
Just a random fun nature fact. Any relation to the items upthread is left as an exercise for the reader.