Lenora's Herdier was revealed just before Ash Ketchum's rematch with her at the Shippo Gym. Lenora's Herdier is a completely different Pokémon all together from Lenora's Lillipup. During Ash Ketchum's rematch battle with Lenora, Lenora's Herdier was matched up against Ash's Tepig. Both Pokémon had become a lot stronger since their previous match-up and it showed during the battle. Roar once again proved to be an effective move causing Ash's Tepig to be switched with Ash's Oshawott but Lenora recalled her Harderrier right after the switch.