Mawile first appeared in Valerie's gym with Spritzee, Mr. Mime, and Sylveon. Mawile looked a bit upset, since Valerie was concerned about the upcoming fashion show, but happily greeted Serena and Bonnie.
Valerie and her Pokémon, including Mawile, watched Lysandre's broadcast from Lumiose City.
None of Mawile's moves are known.