Quen is a supporting character in the anime Mecha-Ude: Mechanical Arms. He is a young doctor affiliated with ARMS, the organization that protects and monitors Mecha-Ude. In addition to his medical role, he works as a scientist researching the mysteries surrounding Mecha-Ude and their behavior, with a particular focus on their energy source, known as Arbitrium. His scientific work centers on understanding how Mecha-Ude function and what powers them, and he uses that knowledge in support of ARMS and its members. He is described as standing 175 centimeters tall. His role in the story is that of a supporting member of the ARMS organization, contributing medical and research expertise rather than serving as a frontline combatant. Reliable published information about Quen does not go into detail about his personal history, personality traits, motivations beyond his research focus, specific relationships with other characters, his development over the course of the series, or any notable abilities in combat, so a more detailed account of those aspects is not available.