Zoroaster (c. 600 BC) was an ancient Persian figure, and the founder of Zoroastrianism. Zoroastrianism is a dualistic religion, in which two forces, the force of good Ahura Mazda, and Angra Mainyu, the force of evil. The prophet is also known by the name of Zarathustra.
In the end, the force of good and the creator of the universe, Ahura Mazda, will defeat Angra Mainyu. Angels are present in Zoroastrianism, and the concept of one, all-powerful God predates all monotheistic religions except for Judaism. Some speculate that Zoroastrian ideas may have also had an effect on early Christianity, and Islam.
The main source for details on the life of Zoroaster is the Avesta, put in writing between 346 and 360 A.D. The earliest surviving manuscipt copies date back to the 13th century A.D.