Lore
There are many adventures who have dared to challenge Dahaka. However with full knowleage of mankind's actions, he evades all potential attacks and returns it with an eternity of pain.
Name Origin
Zahhāk or Zohhāk (in Persian: ضحاک) is an evil figure in Iranian mythology, evident in ancient Iranian folklore as Aži Dahāka, the name by which he also appears in the texts of the Avesta. In Middle Persian he is called Dahāg or Bēvar-Asp, the latter meaning "[he who has] 10,000 horses". Within Zoroastrianism, Zahhak (going under the name Aži Dahāka) is considered the son of Angra Mainyu, the foe of Ahura Mazda.