Gallade was a Pokémon that Zoey got as a Kirlia. Kirlia was used in battle with Dawn, when she attempted to learn a new combo move. Though Dawn lost, she had a good idea of how to perform it.
Later, prior to the final stage of the Grand Festival, Zoey had Kirlia evolve into Gallade using a Dawn Stone. Using Gallade and Glameow, Zoey fought against Dawn's Togekiss and Piplup. Though their strategies were very well planned, Zoey's Gallade powered up Glameow, which caused Zoey to win the Festival.