Buneary came to Clemont's Bunnelby and gave him the ball, which Clemont's Chespin accidentally threw away. Lilia came and managed to find Buneary, then introduced herself to the heroes. Buneary stayed close to Bunnelby; Chespin and Serena's Pancham tried to impress her, but they were ignored. Later on, Clemont and Lilia took a walk with Bunnelby and Buneary, but Lilia and Bunnelby fell into a hole made by Team Rocket, who were hoping they could've caught Buneary. As the heroes decided to leave, Lilia decided to accompany them. On the road, everyone fell into a hole, except for Bunnelby and Buneary, who were stolen by Team Rocket. Clemont promised to return them and traced Bunnelby's location, since a bandage Bunnelby got had a tracking device. Eventually, the heroes defeated Team Rocket and retrieved Bunnelby and Buneary. Lilia decided to train more and bid farewell to the heroes, while Buneary did the same to Bunnelby.
None of Buneary's moves are known.