Leon (Japanese: ダンデ Dande) is a recurring character in the Pokémon anime. He is the Champion of the Galar region's Pokémon League and was formerly the strongest Pokémon Trainer in the world after obtaining the title of Monarch in the World Coronation Series in Flash of the Titans! before losing it to Ash in Partners in Time!. He is Ash's main rival in Pokémon Journeys: The Series, with defeating Leon serving as his primary goal throughout the series.