Angra Mainyu vs Atar

The Hostile Spirit of Zoroastrianism, source of death, lies, and every plague, who in the Vendidad 'counter-creates' an evil against each good land Ahura Mazda makes, and who will be defeated at the end of time.

In the Gathas one of two primal spirits, called twins (Yasna 30.3); in the Zurvanite myth the elder of Zurvan's twin sons, born of his father's doubt.

The opening chapter of the Vendidad lists sixteen good lands created by Ahura Mazda and, against each, a plague created by Angra Mainyu, 'who is all death': the serpent and winter, the locust, plunder, doubt, witchcraft, and more. The pattern of creation and counter-creation is the core of his character: he makes nothing good, only corruption of what is good.

Fire as a divine being, 'son of Ahura Mazda', the visible focus of Zoroastrian worship, who in the Zamyad Yasht faces down the three-mouthed dragon Azhi Dahaka in the struggle for the royal Glory.

Son of Ahura Mazda, in the standard Avestan formula.

The Avesta calls Atar, fire, 'the son of Ahura Mazda', and fire is the element through which Zoroastrians approach God: prayers are said facing a fire or another source of light, and consecrated fires are kept burning in fire temples. Fire is not itself worshipped as God, Zoroastrians emphasize, but honored as the purest of creations and the symbol of truth and divine light.