During their debut, the five Swirlix attacked Serena and Fennekin aggressively. Fennekin tried to fight back, but they spat their cotton strings to tangled her instead. However, Serena has Fennekin, who was freed from their strings, used Flamethrower on them, but they dodged and flew off.
Later, Ash, Pikachu, Clemont, Bonnie, Miette and Slurpuff saw them and noticed that the five Swirlix began to feel scared and wanted to run away when they saw a humongous machine behind them. Unfortunately, they and Pikachu were caught by Team Rocket, and they went spinning inside part of the Octelliry machine.
None of Swirlix's moves are known.