Ker-jen of the Eriswings

Ker-jen is a hostile Eriswing who is slightly insane. His parents were forced to mate by the King their father. Ker-jen eventually found out due to his uncle the prince of the Eriswings. He uses black holes and want to take the throne, but according to Eriswing custom, the usurper must show his power and control by leaving the old king alive.