Harley used Octillery to in the Wisteria Town Contest. Octillery battled May's Munchlax, evading its Focus Punch and using Constrict on it. Munchlax's sight was reduced, and it was unable to dodge Octillery's Octazooka. As Munchlax attempted to launch a Solar Beam, it was struck by Sludge Bomb. However, Munchlax's Metronome was used to summon a Thunder attack which caused severe damage to the Water type. However Octillery healed itself with Rest, and despite getting struck by Focus Punch and Tackle, it defeated Munchlax with Octazooka, winning Harley the Contest and giving him his fourth Ribbon.[1]
Octillery was used in Harley's appeal during the Kanto Grand Festival. During the appeal it launched a Fire Blast to surround itself in flames, causing Harley to advance to the next round.[2]
