Quenser Barbotage is generally portrayed as lighthearted, witty, and at times, mildly perverted often engaging in crude banter with his comrade Heivia Winchell, particularly regarding their commanding officer Froleytia’s appearance. Despite his relaxed and occasionally inappropriate behavior, Quenser demonstrates remarkable intelligence, resourcefulness, and compassion, especially in critical moments.

He is deeply empathetic and unwilling to abandon others in danger, exemplified by his decision to rescue Milinda Brantini when no one else dared to act. Quenser admits he is prone to optimism and tunnel vision when he believes he has found a path to victory, which sometimes puts him at risk. He acknowledges that Heivia’s more cautious outlook helps balance his own impulsiveness, contributing to their strong teamwork.

A self-professed technology enthusiast, Quenser becomes especially animated when examining high-level machinery, particularly the inner workings of Objects. His fascination with engineering often outweighs his fear, driving him to take bold risks in the pursuit of knowledge and victory.

Quenser Barbotage is a teenage boy with a somewhat androgynous appearance. He has long, silky blond hair and delicate facial features, which often lead others to remark that he could be mistaken for either a boy or a girl depending on his clothing. His usual attire consists of the standard gray military uniform of the Legitimacy Kingdom’s 37th Mobile Maintenance Battalion.

Quenser Barbotage comes from a civilian background within the Legitimacy Kingdom, distinct from the elite class that typically populates the military. In his youth, a noble family near his home fell into bankruptcy and was burdened with debt and public resentment. Quenser’s father, demonstrating compassion, allowed them to stay temporarily in his family’s storehouse.

Driven by his ambition to become an Object design engineer, Quenser enlisted in the military, choosing the fastest route to reach his goal. He enrolled in frontline deployment training, eventually joining the 37th Mobile Maintenance Battalion as a military engineer trainee. His primary aim was to study Object technology firsthand and one day design them himself.

Quenser Barbotage demonstrates exceptional analytical skills, capable of quickly processing complex information and identifying critical weaknesses most notably in Objects, massive war machines typically impervious to conventional tactics. His ingenuity allows him to adapt to battlefield conditions using whatever tools, knowledge, or environmental factors are available. A prime example is his success in identifying and exploiting Object vulnerabilities simply by reading technical documentation.

Although Quenser is not a trained soldier and is not authorized to carry a military firearm due to incomplete combat training, he serves as a combat engineer thanks to his specialized education in explosives. He initially used standard C4, but after his first success in destroying an Object, he was upgraded to using more advanced and expensive Hand Axe explosives.

As a student aiming to become an Object designer, Quenser primarily assists in the maintenance of the Baby Magnum Object, though his training status prevents him from handling sensitive components such as the JPlevelMHD reactor or the targeting sensor systems. His inventive strategies and unconventional thinking have drawn the attention of established designers; Claire Whist, a veteran Object engineer, has suggested that Quenser’s ideas could revolutionize Object design by several generations if he were to construct his own.

Beyond engineering, Quenser possesses a few miscellaneous skills, such as playing the guitar which he took up to become more sociable and piloting submersibles, a skill he learned during a school field trip. On the battlefield, he has also demonstrated the ability to create makeshift weapons, including improvised rocket launchers and modified vehicle turrets to adapt to specialized missions.

The surname Barbotage refers to a medical procedure involving the repeated injection and aspiration of fluid, often used in the treatment of calcific tendinitis. Additionally, Barbotage is the name of a cocktail made with cognac brandy and champagne. The name may reflect the dual nature of Quenser’s character both analytical and unorthodox mirroring the mix of clinical precision and explosive creativity seen in his role as a battlefield engineer.