Nanette's Tepig was a starter Pokémon that Professor Juniper had selected for Nanette to choose from. Nanette selected it as her first Pokémon. Cilan suggested that since Nanette was the careful type, a marriage with an energetic Pokabu on the contrary would be a good idea.
Ash Ketchum wanted to battle with Nanette but she was afraid that her Pokabu wouldn't listen to any of her commands during the battle so she teamed up with Ash Ketchum and his Ash's Pikachu. Nanette tried to get her Pokabu to use Thunderbolt as she had just seen Ash's Pikachu but Nanette's Tepig turned around to look at her in a surprised way as it couldn't learn that move. The battle didn't last very long as the Rocket Gang interrupted it.