protagonist encounters the antagonistic group, Team Galactic, early in the game, when he or she must save Professor Rowan from some of their thugs; however, their motives are unclear until later. The player encounters Team Galactic again when they take over a wind farm and when they set up a base in Eterna City, before eventually taking over Sinnoh's three lakes in an attempt to capture the Mirage Pokémon Uxie, Azelf, and Mesprit. Shortly after the player earns their seventh Gym Badge, Team Galactic captures the Mirage Pokémon and imprisons them inside the science laboratory of the Team Galactic Headquarters Building, where its members extract crystals from the Pokémon to create the Red Chain, an object that can control the legendary Pokémon Palkia in Pearl, or Dialga in Diamond. After releasing the trio, the protagonist is able to access Spear Pillar, an ancient ruin atop Mt. Coronet, where the leader of Team Galactic summons Dialga or Palkia. The legendary Pokémon's powers begin to overwhelm Sinnoh, causing the newly free Uxie, Azelf, and Mesprit to attempt to stop it. The player then battles Palkia or Dialga, and after defeating or capturing the Pokémon, Sinnoh returns to normal. Afterwards, the player continues their journey, eventually making it to the Sinnoh region Pokémon League's Elite Four. After defeating all four members, they then battle the Sinnoh League Champion, a woman named Cynthia, who had appeared before in the game. After the protagonist defeats Cynthia, they become the new Sinnoh League Champion, finishing the main story. In the post-game, there is a new island to explore that contains Pokémon not seen in the main game, and has some new stores and a tournament center. The protagonist's old friend, who challenged them to battles multiple times before, will also be waiting for them here and will challenge them to one more battle. Development Pokémon Diamond and Pearl were developed by Game Freak and Junichi Masuda served as game director. The game's music was scored by Hitomi Sato and Junichi Masuda under the supervision of Go Ichinose, with a few other fanfares composed by Morikazu Aoki. According to The Pokémon Company's Tsunekazu Ishihara, the games were designed with the DS's unique features in mind, such as the Wi-Fi capabilities and slot for Game Boy Advance cartridges. The command buttons in the battle screen are large and color-coded; according to Masuda, this feature would facilitate gameplay for