Byakko stands as one of the four principal antagonists operating within the Kitoralsus organization. He debuts in Episode 02 of the series. Byakko directly clashes with the Shinkalion defense forces, engaging the E5 Hayabusa and Doctor Yellow in a pivotal confrontation deep within the Underground World. This encounter highlights the strategic coordination required by the Shinkalion pilots to counter Byakko's combat capabilities.

Functioning as a Kitoralsus Agent, Byakko acts under the command of the overarching antagonistic force instigating monster attacks throughout Japan. His primary duty involves frontline combat against the Shinkansen Ultra Evolution Institute and its protectors. Among the quartet of Agents, Byakko is distinguished as the sole member without dialogue throughout the second season; his only appearance is a silent cameo during the season finale.

No further narrative development, background origins, or evolution in spin-offs, films, or other media are documented.