XY005: A Blustery Santalune Gym Battle!

Humans

 * Viola

Pokémon

 * Vivillon

Trivia

 * This is the third instance a Gym Battle takes place in the fifth episode of a series. The first being IL005: Showdown in Pewter City and the second being BW005: Triple Leaders, Team Threats.
 * It is hinted that Serena will meet Ash, Clemont and Bonnie in this episode, or the next one in XY006.