From Bulbapedia, the community-driven Pokémon encyclopedia.
Mario (Japanese:モブオ Mobuo) is a character of the day from the Pokémon anime who appeared in Dressed for Jess Success!. He is a Pokémon Coordinator.
Mario competed in the Lilypad Town Pokémon Contest to try to win the Ribbon with his Granbull. He passed through the Performance Stage but lost against Dawn and her Mamoswine in the quarter finals.
This listing is of Mario's known Pokémon in the anime: