Grimtwig here, is one of the newest residents of the Puca Bestiary, but I think he's been there long enough to make quite an impression if their description of him is anything to go on:
"Grimtwig is so lazy! He's a moss eater and he just sits around munching on moss all day long! He eats and eats until there's nothing left but a patch of dirt."
Well, lazy or not, he had me at "hello" with his little claw feet!