Baphomet

Baphomet is a xenoform sorcerer of immense power. He has, amongst his other powers, incredible powers of regeneration. In ancient history, he attempted to conquer the world but was defeated. His foes could not kill him, so they chained him, placed him in a stone sarcophagus and buried him alive.

Many thousands of years later, the Knights Templar unearthed him from beneath the Temple Mound. At first they kept him captive, but eventually curiosity made them remove his gag and his silver tongue did the rest. Soon the order was his.