A Fiend of Helkin, Kol'gulloth was a devil of the Circle of Lust. Desiring power but unable to move upward in their own layer, they assassinated the previous archdevil of wrath and assumed control of the Iron City of Dis. This was short-lived, as Kahletia rose in power and dispatched of Kol'gulloth.
Kol'gulloth, disgraced and demoted, returned to Helkin.