Jason

Series One
Jason is described as a dirty-blond-haired boy with cobalt eyes. He is a shapeshifter from the Eight-Eyed Realm, meaning he can change his accent, creature type, and characteristics. He can also make minor edits, like giving himself gills or wings. Jason appears briefly in Destiny, and is one of the major winning factors against the Ancient Demon King.

Series Two
Jason is mentioned briefly as "Uncle" by Erc in the third book.