King Rion Gryphonheart, or King Gryphonheart the First, was the first Gryphonheart monarch, the slayer of the Barbarian King Tarnum and the founder of the kingdom of Erathia on the continent of Antagarich. Upon his death after establishing the Erathian throne, his soul was captured by demons from The Underworld, subject to torture until its release at the hands of Tarnum himself.