Sith

Sith is a coruptoren (basically he looks like a demonic one-winged angel) and a member of the Chosen Four. Sith trained with the Black Knights and soon betrayed them after he found out he was a magical creature (because the Black Knights kill magical creatures). Sith followed his own rules for awhile and then he met Curt and soon they became friends. Now Sith works for the Magical Council and teaches the new Chosen Four how to fight.