Deerling was given to Greg from Greg's best friend, Markl along with Minccino. Deerling made his debut when meeting Greg's sister, Gabrielle with Greg. Deerling was used in Greg's battle against Gabrielle where he battled against Chika, but lost. During lunch, Team Rocket attempted to steal Deerling and the rest of Greg's Pokemon along with Gabrielle's Pikachu, Pik. But the Pokemon were saved by their trainers and Gabrielle had Pik send Team Rocket blasting off. After that, Deerling was called back into his Poke Ball.