Ginko Kurosaki operates as a police officer in the anti-phantom thief department, directly supporting Dogusaburō Oniyama and collaborating with colleague Momo Shirai. Her core duty involves targeting phantom thieves, with focused pursuit and opposition against Joker and Spade during operations.

She possesses distinct purple spiked hair and matching purple eyes, consistently wearing a standard police uniform comprising a medium-dark blue hat with royal blue accents, a gray-blue-purple tunic featuring pockets, a collared white shirt underneath, a black tie, a medium-dark blue skirt, and black heels. Purple glasses complete her appearance.

Ginko exhibits a wild, daredevilish demeanor contrasting her professional attire, displaying energetic enthusiasm during missions. Her interactions with phantom thieves remain consistently adversarial, reflecting strong professional animosity toward targets like Joker and Spade.