User blog comment:Harold Burned-Mane/RP Idea: Half-Gods of Tamriel/@comment-5543592-20150828195944/@comment-17114085-20150828215044

How can a human Akatosh, for example, mate with an Argonian? He just can't.

Argonians can only reproduce with other Argonians and Argonians are "Atheists" (There is no Argonian Pantheon as we learn in ESO, they rever the Hist but don't worship any gods). So there are no Argonian aspects of the gods. So only deities like the Daedra, that can change form at will, would be able to take the form of an Argonian and mate with a mortal Argonian.

The Aedra can only maniphest themselves as what they are perceived as in the various religions. For example: Auri-El's mortal avatar is an Altmer, Auriel's mortal avatar is a Bosmer, Akatosh's mortal avatar is an Imperial, etc.