Once Abomasnow was defeated, Wulfric send Avalugg to battle Ash and Hawlucha. Hawlucha dodged Avalugg's Stone Edge and hit it hard with a super-effective Karate Chop. Due to the hail, which was started by Abomasnow's Snow Warning, Avalugg restored some of its health due to its Ice Body ability. Hawlucha attacked with High Jump Kick, but Avalugg deflected the attack by using Gyro Ball, then defeated Hawlucha using the same move. Ash sent Talonflame, who scored a direct hit on Avalugg with Flame Charge. However, Avalugg continued healing itself in hail and launched Avalanche on Talonflame. Talonflame dodged Stone Edge and hit Avalugg with Flame Charge, but was defeated by another Avalanche. Ash sent Greninja, who dodged Stone Edge attack and slashed Avalugg with Cut. Avalugg protected itself from Greninja's Aerial Ace by spinning and using Gyro Ball. Instead, Greninja fired Water Shuriken, which froze Avalugg's legs, stopping it from spinning and dealt heavy damage with Cut. Ash synchronized with Greninja, who transformed into "Ash-Greninja", who managed to inflict damage on Avalugg with Aerial Ace. Avalugg retaliated with Avalanche, a pain both Greninja and Ash felt. Ash-Greninja sliced through Stone Edge and damaged Avalugg with Cut, who retaliated with Avalanche. Ash-Greninja repeated the Aerial Ace attack before getting wounded by Avalanche. In the end, Avalugg froze Ash-Greninja, who tried to use Cut, by using Ice Fang and defeated it with Gyro Ball, giving Wulfric the win.
Avalugg appeared in Greninja's flashback while the latter was thinking about its lost against the former.
During Ash's rematch, after Bergmite was defeated, Wulfric sent Avalugg into battle against Ash's Pikachu. Avalugg took Pikachu's Thunderbolt and hit him with Avalanche. Avalugg tried to attack with Gyro Ball, though Pikachu slammed the ice with Iron Tail, creating a crack to stop Avalugg from spinning. However, Avalugg managed to defeat him with its Stone Edge attack. Ash sent Talonflame, who burned Avalugg with Flame Charge. Avalugg retaliated with Stone Edge, wounding Talonflame, who damaged Avalugg with Steel Wing. Avalugg inflicted heavy damage to Talonflame via Avalanche, but was defeated by another Flame Charge attack.