| Category | Groups |
| Type | cult |
| Region | see below |
| Headquarters | Quelmollendë |
| Size | unknown |
| Race | any |
| Alignment | chaotic evil |
| Deity | Lolth |
| Purpose | anatomy, creation |
| Established | unknown |
Ryldorvir is a cult that delves into the intricacies of anatomy and the generation of novel lifeforms. The majority of these abhorrent creatures are set free to roam the Underdark. They frequently incorporate deep rocks in their experiments. These stones, with their transformative properties, have facilitated the creation of some nefarious and dreadful monstrosities. One of the more ghastly creations of the Ryldorvir is an acid-expelling slug possessing the upper torso of an ogre. These monstrosities are referred to as ogre slugs.
In the Horgon Era, during the dominion of the Zeymah'kein Empire, Ryldorvir cultists, subsidized by the aforementioned empire, pioneered the first drakkensteeds. Employed by the empire, their newfound prosperity enabled the cult to venture even further into the fabrication of novel lifeforms.
In the Third Epoch, the intrepid Zhut's Explorers ventured to the Isle of Arcana. Having fought their way past the formidable ogre slugs, they uncovered a Ryldorvir teleporter that transported them to Quelmollendë, the operational base of the Parenómë cell.
In the Bloodtusk Regime, a former pupil of Ryldorvir named Giminâth was accountable for generating vilephants for the Skull Brigadiers.
| Cell | Region | Location |
|---|---|---|
| Terelerrin | Arcana | Felth Catacombs (c.f. Felth) |
| Parenómë | Imgangreth | Quelmollendë |
| Name | Notes |
|---|---|
| Giminâth | creator of the vilephants (c.f. Skull Brigadiers) |