In Vs. Starly, Conway revealed his Eevee as he chose it to have lunch. When asked about the Love Ball, Eevee used Attract on Ian's Piplup and Crystal's Wingull. Piplup is infatuated while Wingull is not. This revealed that Eevee is Female while Piplup is Male.
In Vs. Buneary, Eevee was exposed to the Moss Rock, her evolving into Leafeon. Gardenia appeared afterward, being fascinated by her and offering a trade. Conway refused, then asked for a battle. Leafeon battled Turtwig, being outsped and almost outmatched. Leafeon managed to use a Sand Attack and Attract combo to slow it down, but is quickly defeated.
In Vs. Shaymin, Leafeon comes out of her Pokéball to locate the scent of Shaymin. She later assists in the battle against Hunter J, assisting Ian's Bayleef and Dawn's Cherubi in battling Drapion. They land several attacks, though it takes all of them. She is pinned down by Ariados' Sticky Web along with the others.