Uthagrimnoshaarl

Uthagrimnoshaarl, also known as the Dire Dragon, was a shadow dracolich who acted as the guardian of the Well of Dragons in Skull Gorge.

Description
Uthagrimnoshaarl was a special kind of undead, a dracolich.

History
Around 1370 DR, the Cult of the Dragon approached him with a proposal of an alliance: The Cult's wizards would release the Dire Dragon from his role of guardian if, in exchange, he would permit the Cult to build a fortress inside the Well.

He annihilated the village of Ladydove, with only Yajandra Dlathaero's house surviving.

Sometime after 1370 DR he was destroyed.