Board Thread:Questions and Answers/@comment-72.94.229.240-20170214224406

They couldn't exsist as long as humans. Otherwise population of humans would drop to fast during any time period Quinkaes couldn't be made. This means some one or some thing made ghouls. It's just like the mysteries of Attack on Titans. PS: For the sake of everyone who has not learned, Don't write spoilers for anything in the comments please. Sorry to be a pain in the butt. 