Peryite is one of the group of seventeen strongest Daedra known as Daedric Princes. Among mortals, he is considered the Lord of Pestilence; among the daedra, he is charged with ordering the lower planes of Oblivion. Despite his dragon-like appearance, he is considered one of the weakest of the Daedric Princes.
In terms of direct interaction, Peryite is one of the least known of the Daedric Princes, not being recorded by name in the history of any known Tamrielic culture. When he does appear to mortals, he usually takes the form of a large dragon or wyrm. Even among those mages with the skill and knowledge to travel to the planes of Oblivion, Peryite’s Pits are impossible to enter.
Indirectly, Peryite, has influenced the lives of nearly every mortal inhabitant of Nirn throughout history. He is the Lord of Pestilence, and the cause of many plagues and pandemic diseases, and low order; though few mortals are aware of this. He is typically listed along with Princes such as Mehrunes Dagon and Vaermina as one of the few truly evil Daedric Lords, in the mortal man and mer sense of the word