Poisonous little frog-people from the jungles of southern Sancstoryl, mostly on El-Batok and Aiyetoa. Grung are a pretty xenophobic tribal people with a strict caste-system, which has made them quite averse to outsiders; sometimes even taking them as slaves. Nonetheless, a few tribes are more open to outsiders, and quite a few also have integrated in the burgeoning coastal cities of the two continents, allowing some of them to see the world to their hearts content.