Monsters are real. Anyone who’s ever been a fan of "The X-Files" can tell you as much. While a good portion of screen time over the last 15 years has been dedicated to extraterrestrials and the will they/won’t they relationship status of Agents Fox Mulder and Dana Scully, the series has also given us some of the weirdest, grossest, and most horrifying terrestrial monsters ever seen on television. Now, some of these nightmare worthy X-Files monsters are so out there that it’s easy to take comfort in knowing there’s no way they could ever exist. But others... well, we’ll let you be the judge.