Cheryl

She is one of the five trainer who can join with the main character during an event in Pokémon Diamond, Pearl and Platinum. Later, she can join the player in competition at Sinnoh's Battle Tower. She first appears in Eterna Forest. She asks the player to join her because she's afraid she might run into Team Galactic.Her Chansey is good at using restoration techniques like Refresh and Softboiled, but isn't good at offense.