You probably haven't come across a Doofur before, although they do feature briefly in the Marvellous Medley of Small Furry Animals. No-one is quite sure what they look like or where they come from. Except for the Doofurs, of course, and the children who've been lucky enough to see them in action.
Every Doofur knows that his or her mission is to fearlessly go where no Doofur has gone before. Their objective is to help children everywhere achieve their dreams and their reward is the satisfaction of a job well done.