im not really sure if this is the answer you're looking for the closest hc of the sort i can give you is that i like to think rhllor is popularly worshipped in asshai. the whole night is full of terrors thing. also fun to think that the reason quaithe's mask is red is somewhat related to it because quaithe has a lot of similar powers to melisandre and shadow-teleport is not that unlike shadow-baby in its logic.