Hyginus

Hyginus of Bishop Hyginus of Cordoba is a Bishop in Cordoba and opponent of Priscillian movement that lived in last 4th century.

History
Hyginus had conspired to have an ascetic named Priscillian executed for heresy. Unknown to people, the reason behind the execution is because Priscillian had learned that Hyginus was consorting with demons. In order to cover this, Hyginus had used his demonic allies to help convince Pope Damascus I to have Priscillian condemned because of his knowledge about it. Hyginus later succeeded in his endeavour and Priscillian executed.

At some point, Hyginus had created the four stones to hide a demon’s essence within a possessed body, even from an angel. The stone later renowned as Stone of Hyginus. However, Heaven learned about this. Ramiel had been sent to confiscate the stones. He had succeeded in retrieving three of them and casting out the demon who had lured Hyginus away from the Lord. However, the last part is missing somehow.

Ironically, history would remember Hyginus as a devout Christian who had rid the church of a heretic, and Priscillian as one of the first such heretics.

Power and Abilities
Originally a Bishop, but after making secret pact with demons, he was possessed by it as part of the pact. Under the possession, he regained some skills in demonic magic aside of wicked, treacherous mind, that slowly corrupting him until Ramiel freed him.
 * Magic - Under Demon control, he was skillful to craft Stone of Hyginus, a set of demonic relic that utilize soul including demonic essence as a weapon.

Appearance

 * Supernatural: Heart of the Dragon