Billy the Goat Demon

Billy the Goat Demon is an ancient arcane horror, created two hundred years ago. He will madly dash across the land for days at a time, killing and eating any living thing foolish enough to get in his way. He ambushes travellers, breaks into houses, and wreaks havoc in cities. Whenever a strong group of adventurers try to fight him, he somehow dissapears, and reappears somewhere else. He was created on a small mining island called Rondrak, when a group of miners struck a vein of powerful eldritch gas secretly controlled by a demon. They tried to escaped, but were eventually killed. One miner tried to hide in the goat pen, behind a particularly murderous goat. They both died, and the gas tore away their flesh, leaving only bones. The goat’s skull sat next to the miner’s body, until the gas fused them together. The demon controlling the gas entered the body, and became Billy the Goat Demon.