Agatheron's Points of Light
Human Priest of Orcus
Not much is known about Kalarel, save for his obvious role in manipulating both the local Kobold and Goblin populations as he attempts to re-open the rift to the Shadowfell. The players first encountered a spectral projection of Kalarel at the burial site of a Dragon, where their mentor Douven Stahl was being held captive.
The heroes confronted Kalarel in his lair in the closing moments of his ritual to open the latent Shadow Rift. Brought to his knees by the Heroes, Kalarel was pulled into the rift for his failure before the rift eventually collapsed upon itself.