Iurugen the Devourer

Iurugen Eyolias was one of the first yuan-ti of the silver fang, raised to be an ageless emperor of the Eyolias Empire, though was poisoned and brought to an untimely death only 30 years into his rule.

200 years after his death, his shadow had risen the ranks of Hell, and was summoned back to the Material Plane by yuan-ti cultists, who mistook him for his twin brother, who was also believed to be dead. Instead, an angry and violent Iurugen entered the world, roaring for the demise of his brother, who he believed to have killed him. Frantically, Iurugen was de-summoned, but poorly, and he was sent to the far reaches of the chaos planes. The cultists, furious, placed a curse on his name, so that all who learned of him perished, dying painfully as snake venom flooded their veins.

Confused, angry, and all alone but for the chaotic energy around him, Iurugen began to grow, and has ever since. As he grows to large for a plane, he devours it, and grows to fill the next, and the next, and the next, in a ceaseless search for escape and revenge on Kennet, his brother.