Quenser Barbotage (クウェンサー＝バーボタージュ Kuensā Bābotāju) is a battlefield student under the Legitimacy Kingdom's 37th Mobile Maintenance Battalion and a trainee as a mechanic of Objects, aspiring to be an Object designer. Unlike many members of the military, he does not belong to an elite class. Quenser and Heivia were the very first people to destroy an Object without the use of another Object or nukes, and despite this action making them national heroes and famous even in other nations, the two are still considered problem soldiers and are sent with their battalion all over the world to fight cutting-edge Objects.