Xalasen

Xalasen is a Dragon, ancient beyond measure. He was the model for all those spawned after him, and therefore superior. He was made to be immortal, unlike other Dragons, so that his soul survived while his body rotted. He survived both the First Wars and the First Calamity, although during the Battle of Um'taran he was injured, and presumed killed.

Over the subsequent two millennia he came to reside in the Eldar mansion of Nyan Marmu, becoming old, blind and decrepit. His lair was discovered in 4145 by Alutun Nolcastu and a group of scalp hunters, and despite injuring him, they were unable to kill him.