Yiek & Oak Oak (on the left) is, like his master Otto, a perfect chameleon. He can change his shape, his size and his weight at will. Oak loves to irritate people by constantly taking on new forms and imitating various items. Yiek (on the right) is Grag’s constant companion. He is a moon dog and does not need to breath oxygen. He eats all kinds of ore and metal. Yiek can communicate via telepathy.