A thousand years ago Zaratustra believed in Dahak lie but at a key moment he turned his back on Dahak and as punishment Dahak orchestrated his family's death and endowed him with immortality so that he would always remember what happened.
Zaratustra found Hercules and told him about Dahak and as is Dahak's process of entering the physical world, he offered to perform an exorcism ceremony, on advice Mnemosyne they used the light of the stone of creation, they began to drive Dahak out of this world. But in the process Dahak killed Zaratustra.
Zaratustra & Hercules
Trivia[]
In real life, Zarathustra was an ancient Iranian prophet, religious reformer and spiritual leader who founded what is now known as Zoroastrianism.