From the introduction: Now clattering bugs came pouring out from under the table. They were of a sort Roland had seen before, and any doubts he might have held about what was behind that tapestry departed at the sight of them. They were parasites, blood-drinkers, camp-followers: Grandfather-fleas. Probably not dangerous while there was a bumbler present, but of course when you spied the little doctors in such numbers, the Grandfathers were never far behind. User summary: A bestiary for the game.