Grungs were poisonous frog-like amphibious humanoids that lived in trees. Their society was organized in castes determined by each grung's color.[1]


Grungs preferred to live in shady areas, and needed to remain in constant proximity to water. Their tadpoles developed in ground pools, already separated by caste. All grungs continuously secreted a poisonous substance that was harmless to them.[1]


In addition to their naturally poisonous nature, grungs also poisoned their weapons. Each color of grung poison caused a different ailment in their victims.[1]


Grung society was a rigid caste system, and each grung's place was determined by its color:[1]

Warriors, hunters, and general laborers.
Artisans and domestic workers.
Supervisors of the green and blue grungs.
Scholars and magic users. Also known as grung wildlings, they were superior to purple, green and blue castes, and respected even by higher castes.
Elite warriors, with authority over all lesser grungs.
Also elite warriors, with the highest leadership positions. Every tribe leader was a gold grung.

Some mobility was possible between the castes, in cases of valuable contributions and great deeds, by the use of ritual magic and herbal compounds.[1]

Grung tribes also made extensive use of slavery, and were always looking for new creatures to enslave. They kept their slaves at bay by poisoning their food in order to inflict lethargy on them. Over extended periods of time, the effects of such poisoning could only be removed by magic.[1]

Notable grungsEdit

Nangnang, one of the Nine Trickster Gods of Chult, was a grung.[2]



  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Wizards RPG Team (2016). Volo's Guide to Monsters. (Wizards of the Coast), pp. 156–157. ISBN 978-0786966011.
  2. Christopher Perkins, Will Doyle, Steve Winter (September 19, 2017). Tomb of Annihilation. In Michele Carter, Scott Fitzgerald Gray eds. (Wizards of the Coast), p. 256. ISBN 978-0-7869-6610-3.