Vaermina’s physical appearance is usually that of a female mage, complete with a flowing robe with deep sleeves and a magic staff. She rules the plane of Oblivion known as Quagmire, which is described as a constantly shifting nightmare realm. She is one of the Daedric Princes that is consistently depicted as evil or demonic, with a strong preference for psychological torture. At the same time, Daedra worshipers will often pray to her just before sleeping, likely in hopes of warding off any potential meetings during their rest.
Vaermina is often said to be strongly connected with Magnus, the source of magic on Tamriel. Many scholars believe that, through their dreams, even otherwise magically-untalented mortals can slip into Quagmire, and behold Vaermina’s presence. Upon speaking to her, Vaermina will explain that mortals visit her constantly in their nightmares, speak to her in their sleep, and often wake in a cold sweat upon leaving her presence. Most mortals are unaware of this meeting, however, as they cannot remember anything that occurred during their dreams. After a true, remembered encounter with the Daedric Lord, her followers often claim that nothing on Nirn holds any fear for them, as nothing can possibly be as frightening as being in Vaermina’s presence.