Pokémon: Giratina and the Sky Warrior

When scientist Newton Graceland discovers a parallel universe known as the Reverse World, inhabited solely by the Pokémon called Giratina, he plans to harness its power. Although Graceland abandons that idea, his evil assistant Zero (Eric Stuart) secretly plots to capture the Reverse World for himself. In order to stop him, Graceland enlists Pokémon trainers Ash (Bill Rogers), Dawn (Daniel Jenkins) and Brock (Ikue Otani) to help Giratina stave off the treacherous Zero.