In Pokémon Platinum, this Pokédex listing was expanded. For Pokémon that appear in the expanded listing, but do not in the Pokémon Diamond and Pearl. Pokémon Platinum Version (Japanese: ポケットモンスター プラチナ Pocket Monsters Platinum) is a sister game to Pokémon Diamond and Pearl, and the third. POKEMON PLATINUM LEGENDARIES In order to obtain any of the Regi Trio in Platinum, you must have one of the Event Regigigas (see below). For each of.