A towering, heavily muscled humanoid serpent with deep umber scales banded by dull copper markings. His long, batlike wings fold around his shoulders like a cloak, and two powerful tails drag and coil behind him, allowing him to slither with startling speed across stone. He has three narrow reptilian heads, each with its own expression and voice. The central head watches whoever seems most dangerous, the left head studies exits and high ground, and the right head rarely stops smiling. His fingers are unusually long and flexible, ending in dark hooked claws. His palms and fingertips are hardened from climbing volcanic rock, handling weapons, and crushing bones. A faint green vapor leaks from his mouth when he is excited, and patches of scale along his forearms occasionally flake away into harmless black dust, an outward sign of his supernatural decay.

Ulvadóra is patient in the way a predator is patient. He speaks softly when he wants someone to underestimate him and becomes theatrically polite when he is preparing to threaten them. He enjoys watching groups fracture under pressure, especially when he can make each person believe they are the one he trusts most.

Ulvadóra was the youngest and most favored child of Typhon and Echidna, born beneath a sky split by volcanic lightning. His three heads emerged arguing, his two tails coiled around one another, and his first breath blackened the stones of the birthing cavern. His parents saw immediately what his older siblings did not: he was not merely another monster of the deep places. He was obedient when obedience served him, inventive when cruelty required it, and utterly without fear of the gods, heroes, or the creatures that called themselves civilized. His grandparents, Gaea and Tartarus, eventually summoned him from the underlands and gave him a purpose beyond family rivalries. He was sent into the wider world as an agent, scout, and executioner, tasked with learning the roads, weaknesses, and hidden resources of mortal lands. The years of wandering shaped him into a brutal survivor. He learned to sleep in ravines, drink from poisoned-looking springs, stalk prey through ash fields, and read a battlefield by the direction of blood. As an Outlander, he carries no fondness for civilization, but he studies it closely, because every city is a landscape with walls, choke points, food stores, and someone who believes they are in charge. His siblings tolerate his promotion only because their parents clearly favor him. Ulvadóra intends to make that favoritism permanent.