Clan Pestilens is one of the major clans of the Skaven, a race of malevolent ratmen in the Warhammer Fantasy universe. Known for their obsession with disease and decay, they worship the Great Horned Rat and seek to spread pestilence across the world. Their leaders, the Plague Monks, are fanatical warriors who use the power of contagion to weaken their enemies. The clan is infamous for its use of biological warfare, employing various plagues and toxins in battle. They create horrific creatures, such as the Plague Furnaces and Plague Censer Bearers, to unleash chaos and suffering. Clan Pestilens thrives in the shadows, spreading their vile influence wherever they go.