Professor Oak tried to catch these Slugma with his Stantler and his Ledyba but failed. The multiple Slugma attacked the Pokémon Academy and Professor Oak saw that. Crystal then sent out her Pokémon out to stop the Slugma. Her Pokémon used multiple attacks on the Slugma and Chumee then used Mean Look so they couldn't run away. Crystal ordered Parasee to use Spore which made the Slugma asleep and Crystal then caught them.