Mako used her Serperior in a battle against Ash Ketchum and his Pikachu. Serperior used Tackle on Pikachu but Pikachu was able to dodge the attack. Then, Mako ordered her Serperior to use Wine Whip, which was also dodged by Pikachu. After Pikachu sprang high up, Seperior used Energy Ball, which was blocked by Pikachu's Iron Tail. Pikachu then used Electro Ball and eventually defeated Mako's Seperior, eliminating Mako from the tournament.