Peryite

Peryite is the Daedric Prince of Pestilence in the Elder Scrolls series. He is known for the spreading and potentially cleansing and curing of disease throughout Tamriel. While he is often depicted as a dragon, he is considered one of the weakest of the Daedric Princes.

Role
The Daedric prince is very arcane to the mortal realm, something tht leads those to consider him weak. But when individuals encounter him, it is said that he takes on the appearance of a dragon.

His primary job is that of spreading disease throughout Tamriel and Nirn overall. Because of this factor, he could be considered to some believers to be one of the darkest, and most evil of the Daedra lords.

However, in contray to the belief of this representation, he could also have a softer side in the more recent times, suggesting he now wishes to help eradicate and cure diseases in the mortal realm. In The Elder Scrolls V:  Skyrim, the Dovahkiin can contact him at his shrine located just northeast of Markarth. There, Peryite tells the Dragonborn that an "afflicted" group of individuals contracted with a particular greenish disease, has recently displeased him, and that he wants the Dragonborn to travel to their hideout and kill their leader. Once they have suceed, he rewards the Dragonborn with a unique enchanted shield called Spellbreaker. It could be implied from this that he is trying to strengthen his position as a Daedric Prince by helping the mortals, as well as showing some empathy for them.