In Vs. Octillery, Octillery was Harley's choice for the battle round of the Wisteria Contest. He got Harley to the final round, where he battled against Brendan's Onix. Despite Onix's speed boost with Rock Polish, Octillery was able to use Bullet Seed to partially hit Onix, negating its Sturdy ability. He then used his Suction Cups ability to stick to Onix's face, not being thrown off even by a Rock Slide attack. He defeats Onix with an Octazooka attack, winning Harley the contest.
In Vs. Kanto Grand Festival, Harley used Octillery in the preliminary appeals of the Grand Festival. Harley dressed as Brendan and danced around. Octillery uses Fire Blast and dances in the flames.