There are several Legendary Pokémon that you can find in Pokémon Brilliant Diamond and Brilliant Pearl. These Pokémon weren't in the original Pokémon Diamond and Pearl games, giving you a chance to experience something new you haven't seen in them. Here's how you can find Regirock, Regice, and Registeel in Pokémon Brilliant Diamond and Brilliant Pearl.
You will meet Regirock, Regice and Registeel in the same place where you will find the other Legendary Pokémon, in Ramanas Park. You will be able to access this location once you complete the game and unlock the National PokéDex, which you must do by completing the Sinnoh PokéDex.
You also want to make sure you take Mysterious Shards into the building before trying to find these Legendary Pokémon. You can find mysterious fragments in the Grand Underground. There are small and large versions of the mystery fragments. They are available via the Digging for Fossils mini-game. These are rare items, so we recommend increasing your Diglett and Dugtrio bonus on the left side of the screen, below the map. We recommend increasing it from 35 to 40 for the best results.
When you have at least three small Mystery Shards or one large Mystery Shard, you can purchase a board to encounter these Pokémon. You want to take the Discovery Slate to find Regice, Regirock and Registeel. These Pokémon are available in both Pokémon Brilliant Diamond and Brilliant Pearl versions.
