Grianos is one of two familiars created by Roselia, the Hexen Clan elder; the other familiar was Celine. He takes on the form of a bird and is incapable of human speech. He has been with Vita since she was young and growing up in the Hexen Clan village. He mostly as the medium through which Vita sends her magic through (akin to a projector), and Vita also uses him to keep an eye on targets. Like Celine, he is presumed to know and use magic.
By using the spell Savant Valse (
At the end of said war, Grianos was killed in the Infernal Castle by Rufus Albarea upon him revealing his true allegiances. One of his feathers came into the possession of Musse Egret, who used it to teleport out of the Gral of Erebos when the Great Twilight began. In Trails of Cold Steel IV, Vita is looking into the possibility of reviving Grianos.