Nurse Joy designates a widespread family of near-identical individuals serving as nurses in Pokémon Centers, including throughout Sinnoh during the Diamond & Pearl era. Joy functions as their shared surname. All members exhibit a strong resemblance: pink hair, fair skin, and standardized uniforms. In Sinnoh, this uniform comprises a Mexican-pink dress, a white nurse apron, and flat Mary Jane shoes. Minor physical differences, such as eyelash length, allow perceptive individuals like Brock to tell them apart. Each Nurse Joy operates a Pokémon Center, delivering comprehensive medical care to injured Pokémon. This involves restoring health, healing status ailments, and offering shelter to traveling trainers. While generally non-combatants, they exhibit firmness when confronting Pokémon mistreatment, notably by Team Rocket. Their default demeanor is kind and helpful, though they can become stern under pressure or when addressing trainer negligence. Some Sinnoh-based Nurse Joys also serve as judges for Pokémon Contests and Grand Festivals alongside figures like Raoul Contesta and Mr. Sukizo. The family employs specific Pokémon to aid their medical work. Chansey remains the consistent partner across all regions, including Sinnoh, performing healing tasks under Joy's direction. Some Sinnoh Nurse Joys utilize evolved Blissey for similar supportive roles. One Nurse Joy near Fuchsia City previously used a Meganium for its Aromatherapy and Sweet Scent abilities, though this predates the Diamond & Pearl timeline. Brock frequently expresses romantic interest in various Nurse Joys during his Sinnoh travels, though his companions, particularly his Croagunk, consistently interrupt his advances. One Diamond & Pearl episode featured Brock dreaming of multiple Nurse Joys and Officer Jennys expressing affection before Croagunk awakened him with a Poison Jab. The character operates as a recurring supportive role adhering to this established familial pattern.