Zelnogrard Gata no Master appears exclusively in the ONA series *Busou Shinki: Moon Angel*. He owns and commands a Firearms-Type Shinki named Zelnogrard in Shinki battles. His personality is rude and overconfident, frequently displaying a smug demeanor during interactions, especially when confronting the protagonist Tsubasa. This attitude undermines his Shinki's combat effectiveness, contributing to Zelnogrard's erratic accuracy and tactical failures.

During a sanctioned battle against Tsubasa and his Shinki Kaguya, Zelnogrard Gata no Master openly mocked Tsubasa while issuing commands. The battle employed a virtual simulation system resembling *Busou Shinki Battle Masters*, with both masters using VR goggles for direct control. Despite Zelnogrard's superior equipment, his ineffective commands combined with the Shinki's combat shortcomings resulted in their defeat. No additional appearances in other *Busou Shinki* media are documented.