Ginko Kurosaki is a police officer in the anti-phantom thief department, working under Dogusaburō Oniyama with her colleague Momo Shirai. Her primary duty involves assisting operations targeting phantom thieves, specifically Joker and his associates.

She has distinctive purple hair styled with spiked ends and purple eyes, typically worn with purple-framed glasses. Her standard police uniform consists of a medium-dark blue hat featuring royal blue accents, a gray-blue-purple tunic over a collared white shirt and black tie, a medium-dark blue skirt, and black heels.

Ginko's demeanor blends professionalism with impulsiveness. While her appearance suggests formality, she exhibits a wild, energetic, and daredevilish approach to her duties. This manifests in her operational methods, frequently involving high-risk maneuvers and technical improvisation.

Her key relationships are professional. She maintains a strong working rapport with Oniyama and Momo Shirai as part of their unit. Conversely, she holds a consistently adversarial stance toward Joker and his rival Spade, viewing them as primary targets for capture.

In her police work, Ginko utilizes specialized equipment: the "Power Winch" as her weapon of choice and the "Devil Chaser" as her primary mode of transportation. She possesses mechanical aptitude, particularly in modifying vehicles to perform unconventional or extreme actions during pursuits.