Persian Mythology Basics

1) Absolute Monarchy: The Theory of the Divine Right of Kings

2) Bias of Polytheism: Shiftchange of Local Gods

God becomes Man, Defeated Gods become Demons, Lightgod Ima becomes King Jamshid, Hero Thraetaona becomes Hero Feridun, Dragon Aji Dahaka becomes Badking Zahaak, etc. Monotheistic Structure firstly came from Orthodox Zoroastrianism, later from Islam as Confucianism greatly shifted the role of Chinese Ancient Legends.

3) Diversed Climate and Geography, Wide Domain of Many Culture and Religion

In Iran, we can see there are Greatest Lake in the World, Northern Mountainous Area, Western Seaside Area, Eastern Desert Area, even many Marshes and Forests exist in that World. We can call Azi-Dahaka as Allegory of Evil Civilization of Babylonians or Desert Nomad from Arabic Peninsula.