And on each Fortress Wall, whether a Smaller or Larger Fortress shall be stationed Seven Dragons with Riders trained by Dragon Trainers and known as Dark Riders.
Their job will include arresting any rider or foreign invader who attempts to go over the fortress and also taking any dragon who serves as an instrument to further such cause.
— Book On Dragonia's Fortresses
Zaren gave them instructions on how they would take their positions and how they must act as well to ensure they successfully passed through the fortress and not end up in prison for committing a crime.
The appearance of the seven dragon guards was said to be instantaneous. The moment they flew over the walls without being properly checked in, seven dragons and their dark riders would appear as if conjoured in the air and they will come for their throats.
