Known as the Poisoner of Hell Nisroch, "The Eagle", is an observing, polite and mocking Duke. Exiled to Avernus for killing the duke Senciner and nearly slaying Abigor, he has now very little chance to perform his favourite trick (poisoning sumptuous meals). Still, he continues to invent and produce deadly poisons with the rare ingredients of Avernus, poisoning various items at random to surprise his unwary victims. Nisroch looks very much like the Tanar'ri Prince Pazuzu: he is an eagle-headed humanoid male with talons for legs and a leathery skin. His feathery areas are black and the only thing that distinguishes him from the demon Prince of Aerial Kingdoms is his set of bat-like wings.