What is Dahhak?
1.
1) A Persian demon. An extremely evil spirit whose name was evoked to scare children.
2) "...very much like winged humans, but taller and thinner. They have dark, angular features and their wings consist of a thin membrane stretched between long bones. The most common demon..." - From The Shivered Sky, by Matt Dinniman
I'm scared of the Dahhak.
See
