Gwynblleiddovah

Gwynblleiddovah (literally Great White Dragon) was a servant of the dragon lord Shorin during the Dragon War, able to utilise the apocalyptic White Frost and making him the most valuable weapon of the Dragon Lord. He was made mortal after the defeat of Shorin, after which he was killed by Ymir and his colonists. His spirit was reincarnated as the warden known as Erron of Centris.