Haruka, a fourteen-year-old operative within the antagonistic organization Xenon, functions as both a driver and spy. She pilots the Gyrozetter Viewt, frequently accompanied by a cat, and advances Xenon’s objectives as a primary antagonist by targeting Arcadia Academy to further the organization’s global ambitions.

Her background ties her to Xenon’s leader, Lord Goat, initially presented as her future father—a connection granting her status within Xenon despite concealed complexities in her origins. This foundation fractures when Goat reveals Haruka is not his biological daughter but a clone crafted from the genetic material of his deceased child. The disclosure triggers profound emotional turmoil, leading Haruka to sever her Xenon allegiance amid identity crisis and despair.

Haruka executes espionage against Arcadia, infiltrating the academy as a student during the fifth chosen driver Satori’s transfer to gather intelligence and sabotage operations. Her tactics prove disruptive, exemplified when she undermines the Gyrozetter Patrol Team’s deployment, forcing Arcadia’s drivers into confronting multiple simultaneous threats.

Post-defection, Haruka grapples with emotional instability, wrestling with betrayal and fractured selfhood. Her recovery begins when Arcadia driver Shunsuke Hayami intervenes, offering support that catalyzes her shift in loyalty. While her relationships typically involve manipulation and conflict with Arcadia’s drivers, her presence uniquely galvanizes Shunsuke’s protective instincts during crises.

Haruka’s physical traits include teal eyes, long brown hair, and a signature purple jumpsuit, reflecting her dual role as pilot and operative.