Also known as the Sin Dragon, Great Demon King, and Old Ancestor Xu Yuan. A supremely powerful being who surpassed Heaven Rank, suppressed 2000 years ago by combined forces of righteous sects. He appeared as a pale young man with long black hair cascading to his ankles, golden/crimson-gold eyes, and pale skin marred by countless wounds. He had been asleep for twenty years in a sealed palace chamber guarded by Scarlet Flame Flowers. Previously flayed, had his tendons ripped out and Inner Core gouged. He despises being treated like a beast. After awakening, he slaughtered Integration Stage Heretical Cultivators in the Abyss of Emptiness and tore open the Celestial Mystery Sect's Protection Array. Bound to Shu Tiantian by a Heaven and Earth Contract left by the sect's founder — he cannot harm her, and if she dies, his heart meridian suffers severe damage.
