Board Thread:Lore Discussion/@comment-25443668-20140921053510/@comment-24349111-20140921084128

Sithis is Padomay's soul, which basically means he's one subradient lower than Padomay.

The Divines (Aedra) are the anuic spirits which existed in the Gray Maybe, also called the Aurbis. They're commonly seen to be the ones which created Mundus and Nirn, although there's a bit of an argument whether Lorkhan should be seen as an Aedra as well.

The Daedra are the padomaic spirits which existed in the Gray Maybe/Aurbis. Instead of helping Lorkhan and the other Aedra with creating Nirn and Mundus, they decided to create realms by themselves, known as the Planes of Oblivion.