Source: The Dragon's Demand, pg(s). 62
Grioths live in dark spire cities on rogue planets, ruled by their elders, and often travel to other worlds via portals during eclipses to pillage resources rare on their homeworlds. Grioths prefer weapons made out of voidglass; and it is thanks to grioths that a small amount of voidglass has been transported to Golarion. Many grioths are known for their devotion to Nyarlathotep, whom they worship in his guise as the Haunter of the Dark. Elder grioths possess unusual psychic powers, which aid them against the Dominion of the Black, their nemeses.
- Mike Shel. (2013). The Dragon's Demand, p. 62. Paizo Publishing, LLC. ISBN 978-1-60125-527-3
- Alexander Augunas, Robert Brookes, Anthony Li, Luis Loza, and David Schwartz. (2016). Armor Master's Handbook, p. 31. Paizo Inc. ISBN 978-1-60125-829-8
- Dennis Baker et al. (2015). Bestiary 5, p. 137. Paizo Inc. ISBN 978-1-60125-792-5