Nessa is a Gym Leader and a user of Water-type Pokémon. Her father is a fisher, and her mother works in the marketplace. Perhaps because of her parents, she grew up playing with Water-type Pokémon and eventually made it all the way to being a Gym Leader. She met Sonia during their Gym Challenge, and they continue to be close friends. Nessa often gives Sonia fresh seafood from Hulbury. She has declared that Milo of Turffield is her rival, but Milo responded by saying that his rival is himself.