Eevee first appeared with her trainer in New Friends, Old Friends. She was confirmed to be female when Sarah mentioned that she was a girl. Team Rocket attempted to steal Eevee, Gabe's Pikachu, Pik, and Sarah's Pokemon. But their evil plan was thwarted by their trainers. Sarah and Eevee then decided to travel with the gang for a while.
Eevee is a very sweet, kind, caring, and loving Pokemon. She loves to be petted as shown when Sarah is holding her and petting her.