The Jachrya were a monster race of the Elder Wilds, sealed away before even the exodus of the Aldmer from Old Ehlnofey, and the Nedics from Atmora. When the Mord Wraith Necromancers came to power in the kingdoms of the Naugrim and took control of the Gnomes of the kingdom of Ildatch, they used their magicks within the Stagwolf Mountains to release the Jachryas again.
The Jachyra's appearance was that of a man shaped beast with red skin and a thick ruff of fur about its loins. They had a battlecry that sounded like laughter, and their poision damaged the body and soul of its victim. They relished pain, and fed on blood. The Jachryas were beasts that thrived on pain and insanity.