Lokesh

Lokesh is a vampire lord and former servant of Vecna that was accidentally released by the party from the Temple of Vecna.

Release
While journeying through the Temple of Venca in the Pleasure Domain, the party found a hidden chamber behind a wall built with loose stone. After clearing the way enough, Odo and Rundgrunnor crawled inside. Once inside, the pair discovered urns of embalming oil and a large, ornately decorated door. Together, they opened and entered a 2nd chamber beyond.

In this 2nd chamber there was a large inscribed stone slab, and a Berserker Axe on the far wall. As Odo inspected and retrieved the axe, Rundgrunnor checked in inscription. Upon reading it's warning, Rundgrunnor was hit with a wave of dark magical energy, becoming cursed. Looking more closely, Rundgrunnor discovered a series of numbers that would stick when depressed. Deciphering the puzzle, Rundgrunnor pressed the numbers in sequence, and with a loud click the top of the stone slab became loose and slid forward just enough to reveal a corpse inside. Using his divine sense, Rundgrunnor identified the corpse to be a powerful undead creature. Wishing to leave before causing any more problems, Odo slammed the sarcophagus closed and the pair left the chamber to continue through the Temple of Vecna.

It was later revealed that the powerful undead was Lokesh. By opening the sarcophagus, Rundgrunnor had released Lokesh, and now carries his curse. The two are linked in a dark magical way, but the specific properties of the curse are still unknown.