Oh... Your arm prosthesis is interesting.
— Var to Rufus
He appeared in the game as a Quest NPC for the Archimedia region.
There is nothing else known about Var other than being the "2nd Class Magical Power Management and Reproduction Device" created by Grandiel to aid the Grand Chase in their quest to bring an end into Ashtaroth's plans.
Although he doesn't appear in the story dialogues, Var interacts with the Grand Chase and, at times, to the players themselves in the mission board.