Policial Jenny recurs throughout Sinnoh in the Pocket Monsters: Diamond & Pearl series, embodying the region's standardized law enforcement alongside her identical namesake relatives. Individual Jennys are distinguished only by their hat badge symbols. Her consistent Sinnoh uniform features a purple cap with a black rim, red top, and gold star, complemented by a purple collared shirt with red trim and a sky blue chestpiece. Gold shoulder pads, a black purse, a matching belt with a gold buckle, a purple skirt, black high heels, and white gloves complete the attire. She routinely collaborates with protagonists during criminal investigations, confronting threats like Team Galactic or poachers. Early episodes depict her joining Professor Rowan and Nurse Joy to locate a missing Pikachu, illustrating her integration into regional networks. Standard police operations involve deploying Growlithe or Arcanine for tracking and apprehensions. A unique Sinnoh variant named Marble appears, partnered with a Luxray struggling to execute electric-type moves. This Jenny enlists traveling trainers' aid to resolve her Pokémon's issue, highlighting reliance on external expertise for specialized cases. Her Sinnoh partner Pokémon extend beyond the Growlithe line, adapting to regional needs. Documented partners include a Luxray for investigations and a Herdier in police support roles, utilized in crime prevention, suspect captures, and public safety operations.