This nurse Joy has a fiery spirit which is both terrifying and amazing at the same time. It’s like watch out for the quiet ones or in this case watch out for the nurse Joy with a personality that changes when she takes off her hat and goes into battle mode.
Chansey is not only a great Pokémon for healing, but it's a great defense, especially if you are able to max out its happiness and evolve it into Blissey.