Nader

Nader is a black dragon that the party has fought on two occasions. Once in the Polaris arena during Session 4: Almost Awesome and the second in Ysgard during Session 28: Surprisingly Violent "Downtime". On both occasions, the party lost.
Tornac inadvertently resurrected Nader by attacking her with Dénouement in Ysgard.  She returned to the Prime Material Plane for over a decade before being slain once again by Vun Roade and a handful of mercenaries.