Baurogh

Baurogh is a beholder and an escaped Deephold fugitive the party fought in Episode 45. He was originally captured by a former Drow empress as a trophy during an excursion into the depths of the Underdark, but who proved too uncontrollable as a pet or a guardian beast, and thus was imprisoned. 
During the fight with the party, Baurogh killed Olivia with his death ray but she was revivified.
Baurogh was slain by Barkley as the final act of the ritual to open the Fiend's Mirror in the Dwarven ruins. He was disintegrated - leaving behind nothing but his Black Eye which Vahlka picked up and later turned in to the Prime Nightwarden Camp in Elchezhar.