Although most are extremely dangerous and nearly inhospitable to mortals, they differ in shape and size according to the ruling Prince. However, it should be noted that the 'planes' of Oblivion are actually just different places in one larger plane. There are sixteen planes in total with each Daedric Prince presiding over one. Oblivion is an extension of the Void and is considered the dualistic inverse of Aetherius, the utopian afterlife. The Planes of Oblivion, home of the Daedric Princes, are areas of Oblivion that are generally dark, depressing and chaotic in nature. 'When thou enterest into Oblivion, Oblivion entereth into thee.' ― Nai Tyrol-Llar