Dunkelzahn
From Nighthawks Shadowrun Wiki
A Great Dragon that made it to President of UCAS. The dragon was assassinated outside the Watergate hotel in Washington DC, after which an atral rift was formed at the location. On the Christmas Eve (Dragons Of Christmas Eve) 2061 Dunkelzahns Rift opened allowing spirits, (including Shedim) and the dragon Ghost Walker out.
Dunkelzahn's will can be viewed on the official Shadow Run site: Link