As you've probably already guessed, Grumble is not a very happy person. He's the kind of person who complains about everything and worries about everything. But maybe his bad disposition isn't all his fault. You see, Grumble has foot problems. Just walking a few feet is quite a feat for Grumble's feet. Then, too, they're so big, the other Freakies just can't avoid stepping on them. And since his feet are usually hurting anyway - well you get the picture.