Zeno is a QUILL resistance member similar in age to Gunvolt, frequently providing behind-the-scenes operational support during missions. He exhibits eccentric, otaku-esque traits, including a passion for anime, manga, and gaming culture, which often overwhelms Gunvolt. As an adept, Zeno possesses an unspecified septima power. Within QUILL, he serves as a field agent and backup operative, collaborating with tech specialist Moniqa on mission coordination. His role often involves remote support for Gunvolt, especially after Gunvolt leaves QUILL to protect Joule. During the first game's events, Zeno is gravely injured in an attack by the adept hunter Zonda, an incident escalating tensions and drawing Copen into the conflict. Following the true ending of the first game, Zeno reacts with stunned disbelief alongside Moniqa upon learning of Asimov's death and Gunvolt's permanent departure from QUILL, marking a significant shift for the organization. His documented activities conclude with this event; later entries involving the Eden conflict or Primal Dragon outbreaks lack elaboration on his role. No spin-offs, OVAs, or other extended media provide additional character development or backstory beyond his QUILL affiliation and otaku traits.