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Rizzo (Japanese: リンゾー Rinzō) is a character of the day in Guarding the Guardian of the Mountain!. He is a Pokémon hunter who wanted to capture a Volcarona. Brycen, Ash and his friends did not allow this but Rizzo didn't care and still went for Volcarona. He had a battle with Ash determining Volcarona's freedom if Ash won. Ash sent out Krokorok against Rizzo's male Jellicent. Krokorok was able to take him out and things went well until Rizzo sent out his female Jellicent. Both of the Jellicent's combined Hydro Pumps sent Krokorok flying and into Rizzo's cage, which left Rizzo excited as he now had two Pokémon.
Brycen now took Ash's place and battled the poacher with his Beartic. With its skills and training, Beartic was able to defeat the Jellicent which sent them along with Rizzo into the cage while Krokorok and Volcarona were freed. Afterwards, he was arrested by Officer Jenny, who thanked Brycen for stopping Rizzo.