Pokémon 7x25

During a break, the heroes get their lunch eaten by a Gulpin. They soon find out a group of Gulpin is eating away the food supplies in the city. They contact Nurse Joy and Officer Jenny, who receive help from Professor Jacuzzi, who decides to stop the Gulpin. After driving off the Gulpin, the professor uses a machine to launch Gulpin away. However, the machine malfunctions and oversizes Gulpin and Ash's Treecko, who battled the former.