Crystal Dragon that pals around with the Wurm that Walks
The Crystal dragon has fought (and lost to) the party three times. First, battling the party when they kicked the “Collective” out of Irkusska. This was also the first time the party fought the Wurm that Walked. Second, battling Vlad, Anton, Handjob and Hope at the castle with the giant robot with the Orgoth station buried beneath it. Third, on Evenport before Via awoke the Sleeper of War beneath the Death Cultist temple.
The Crystal Dragon was destroyed both the first and second encounters. It is apparent he keeps coming back, a little stronger each time. He makes an eerie whistling noise as he flies through the air.