TV-Series
Description
Bat, a recurring operative of the secret organization SPES, debuts as an antagonist during a plane hijacking. His appearance features short blond hair, green eyes, and a dark gray suit paired with gray pants and black dress shoes. Activating his android components reveals a scorpion tail-like appendage extending from his left ear.

Deceitful and cowardly, Bat prioritizes personal whims over organizational loyalty. He exhibits arrogance through mocking law enforcement and savoring psychological games mid-hijacking, yet abandons SPES's suicide orders when confronted by Siesta to ensure self-preservation.

His background identifies him as Albert, who lost his sister in unspecified SPES experiments years earlier. This fuels ambivalence toward SPES, though his exact motivations stay concealed.

As an android, Bat possesses enhanced physical capabilities and sacrificed vision for ultra-acute hearing. This allows sound detection up to 100 kilometers away and individual identification via heartbeat signatures. Strategically, he pinpoints Siesta's transplanted heartbeat within Nagisa Natsunagi and tracks a sniper across a crowded stadium through auditory cues alone.

Bat's involvement starts with the hijacking, where he takes pilots hostage and challenges Siesta. After defeat and imprisonment, he resurfaces when Kimihiko Kimizuka recruits his auditory skills for investigations. These encounters see Bat disclosing critical intel on Nagisa's heart transplant origin and assisting counter-sniper operations.

His arc—transitioning from antagonist to incarcerated informant—carries redemption potential. Specialized abilities and morally ambiguous decisions position him as a candidate for anti-hero roles in expanded narratives.