Dormancy of Angra Mainyu: Angra Mainyu (Ahriman, the Destructive Spirit) remains inert and unaware of creation during this phase.
Persian:In early times, the earth was full of malign creatures fashioned by the evil Ahriman.
The evil spirit, Angra Mainyu (Ahriman), sought to corrupt them and turn them away from Ahura Mazda's teachings.
He lives in a constant struggle against his twin brother, the principal or god of evil known as Ahriman. Both are children of the first creator god, Zurvã (time). Ahriman, as the firstborn son, was more powerful than Ahura-Masda and would have a reign of a thousand years. However, after this period, he would be defeated by Aúra-Masda.
Ahriman is also called Daevanam Daeva(daeva of daevas), which means evil god of evil gods or demon of demons.