Valen Felwind is a nine-foot-tall, heavily muscled infernal tiefling with red skin, golden-yellow eyes, and two magnificent sets of black chitinous horns. His powerful legs end in equine hooves enclosed in heavy dark-iron sabatons that spark against stone when he runs. A ten-foot prehensile tail trails behind him, ending in a wicked scimitar-like blade. He wears a long duster made from the scales of a black dragon he slew personally. Across his chest are branded the holy symbols of Mephistopheles and a mark of favor from Asmodeus. His mace is carried like a judge's hammer, while his trident is a brutal instrument designed to pierce armor and flesh.

Valen is solemn, restrained, and intensely observant. He speaks with the formality of a magistrate and rarely raises his voice, because he has learned that quiet certainty frightens people more than rage. He respects courage wherever he finds it, including in enemies, and gives the defeated a final chance to speak before judgment. Beneath his terrifying appearance is a patient protector who notices fear, grief, and small acts of kindness that others overlook.

Valen Felwind was born in the shadow of the Nine Hells, the son of Felwind, Duke of Wrath. Though called a cambion by infernal tradition, Valen was raised among tiefling soldiers, devilish adjudicators, and brutal battlefield chaplains. His size and blood made him a living weapon, but his tutors discovered something unexpected beneath the fury. Valen listened before passing judgment. He remembered the names of the dead. He treated defeated enemies with a stern respect that many devils considered weakness and many mortals considered mercy. He eventually became the High Inquisitor of the Crucible of Agony, an order devoted to testing faith through pain, conflict, and unyielding discipline. Valen serves Mephistopheles and bears a mark of favor from Asmodeus, yet he understands that infernal blessings are also chains. His duties have made him judge, jury, and executioner, but his greatest oath is personal. When his scheming warlock brother Lucien, once Lord Felwind's Magus, engineered the exile of Valen and their younger sister Neeska, Valen chose exile over obedience and swore to keep her alive. Neeska is small, swift, furious, and deadly, a demonic cambion with several scorpion-like tails, a talent for traps and tinkering, and a habit of disappearing beneath Valen's coat during dangerous negotiations. In battle she uses his immense frame as cover and sometimes rides him like a living war mount. Valen's armor, discipline, and protective aura cover her lack of durability, while her speed and cunning compensate for his limited agility. Together they hunt Lucien's agents, uncover the true purpose of their exile, and decide whether the blood of Hell must determine the shape of their souls.