Abaddon

Abaddon is the name of an outcast God cast down by the Gods of Tyria long ago. In Nightfall, Spearmarshal Kormir suspects that Varesh Ossa and her assistant, General Kahyet are worshippers of this deity and are trying to bring about its return. Abaddon has a location named after itself - Abaddon's Mouth, which symbolizes a hellish gateway to the Underworld.