Ahura Mazda. the Iranian sky god, the Wise Lord, and god of order, depicted as a bearded man on a winged disk, was the principal god of the ancient Zoroastrians. He was one of the Indo-Iranian spiritual lords who also included Mithra and Varuna. Achaemenid Persians worshiped him as Ahuramazda, giver of kingship. Later dynasties worshiped him as a perfect and omniscient spirit. He came to be depicted in human form.
Mithra- pre-Zoroastrian divinity that was the god that ensured contracts and promises were kept binding. As this divinity stood for good, Zoroastrianism incorporated him as an angel in the religion's divine hierarchy, with Ahura Mazda, Lord Wisdom, as the only uncreated Creator God. Interesting that the surviving Zoroastrians use this rock carving as the inspiration to portray a stylised picture of their prophet Zarathushtra, founder of the world's first monotheistic religion.