Nurse Joy of Old Shore Wharf had been kidnapped and brainwashed by Mewtwo to serve him as his maid with false memories that made her believe she lived on New Island her whole life and served him the whole time while he used her knowledge of Pokémon physiology to his advantage.

Joy had awakened inside a laboratory on New Island. She felt a bit disoriented as she sat up on the bed that she was laying on

Joy: Wh-Where am I? She looks around the lab This certainly isn't the Pokemon Center… she whispers to herself as she tries to think

Joy tried to recall what happened before she fell unconscious

Joy: Let's see… I had gotten to the Pokemon Center early… I had some paperwork that I had to sort through… then, what happened after… everything went blank. She says, trying to recall the past events