Gym Leaders and Elite Four members now always use 6 Pokémon instead of the 3-5 from before, and all of these battles have them using high IV Pokémon with custom movesets, held items, and sometimes ideal natures. Important battles such as the rival, Gym Leaders, Galactic Admins or the Elite Four have had their difficulty increased further than normal Trainers. Please note that this feature is purely for the normal Trainer battles in the game the Battle Frontier has not been changed. The details for what each Trainer has can be seen in the Trainer Pokemon document. Additionally, all Trainers use the AI that is normally only used by boss Trainers such as the Elite Four. Trainers can now expect their Pokémon to reach the 70s by the Elite Four, instead of the 50s that was the case in the original Platinum. Trainer levels have also been modified to fit the new level curve, which is now higher than before due to bigger Pokémon rosters and greater use of evolved Pokémon awarding larger amounts of EXP. The Pokémon rosters of every Trainer in the game has been edited, now including Pokémon from the National Dex. Additionally, the correct locations for wild Pokémon are also shown in the Pokédex. The details for where to get each Pokémon can be found between the wild Pokémon and special events documents. In the cases where a Pokémon being in the wild would not be thematically appropriate - for example, starter Pokémon or legendaries - new events have been added to the game to make obtaining these Pokémon feel as unique as they normally would. It's possible to catch or obtain the majority of Pokémon before facing the Elite Four for the first time, meaning you can construct almost any team you want. The wild Pokémon for every single area have been modified extensively, now including species not ordinarily found in the Sinnoh region.

All Pokémon that were originally in Platinum, from Bulbasaur to Arceus, are available to obtain within the game.

Moemon platinum sprite sheet